.exercise,
.vars,
#next {
    display: none;
}
p.question {
    font-weight: bold;
}
var {
    font-style: normal;
}

.hint.last-hint {
    .paragraph {
        font-weight: bold;
    }
}

.hint_blue {
    color: #6495ed;
}
.hint_orange {
    color: #ffa500;
}
.hint_pink {
    color: #ff00af;
}
.hint_red {
    color: #df0030;
}
.hint_green {
    color: #28ae7b;
}
.hint_gray {
    color: gray;
}
.hint_purple {
    color: #9d38bd;
}

div.subhint {
    border: 1px solid #aaaaaa;
    background: #f9f9f9;
    display: none;
    border-radius: 4px;
    margin-left: 20px;
    margin-right: 20px;
    padding: 10px;
}

a.show-subhint {
    font-size: 12px;
    font-style: italic;
    background-color: #fdfdfd;
}

a.show-definition {
    background-color: #fdfdfd;
}

div.definition {
    position: absolute;
    border: 1px solid #aaaaaa;
    background: #f9f9f9;
    display: none;
    border-radius: 4px;
    margin-left: 20px;
    margin-right: 20px;
    padding: 10px;
    z-index: 1000;
}

.solutionarea ul {
    list-style: none;
}
.solutionarea li {
    padding: 7px 0;
}
.solutionarea li label {
    display: block;
}
.solutionarea li input[type="radio"] {
    float: left;
    margin-top: 4px;
}
.solutionarea li .value {
    display: block;
    min-height: 22px;
    margin-left: 18px;
}

#extras li {
    display: inline;
}
#extras li:before {
    content: "| ";
}
#extras li:first-child:before {
    content: "";
}

#scratchpad-show {
    position: relative;
    z-index: 1;
}

#answer_area #check-answer-results {
    overflow: hidden;
    margin: 5px 0;
}
#answer_area #check-answer-results .check-answer-message {
    font-size: 12px;
    line-height: 20px;
    margin: 0;
}
#sad,
#happy {
    float: left;
    margin: 0 6px 4px 0;
}

.examples {
    color: #777;
    margin-left: 20px;
    list-style-type: disc;
}
.examples li {
    margin: 5px 0;
}

#problemarea {
    font-size: 14px;
    position: relative;
    float: left;
    padding-bottom: 38px;
}

#solution {
    font-size: 14px;
}
#solution label {
    display: block;
    white-space: nowrap;
}

#tester-info {
    border: 1px solid #aaa;
    background: #f0f0f0;
    padding: 10px;
    margin: 10px 0;
}
#debug var {
    font: 14px Menlo, Courier, monospace;
    word-wrap: break-word;
}

code {
    font-family: Courier, monospace;
}

pre {
    background-color: #f0f1f2;
    border-radius: 4px;
    color: #21242c;
    font-size: 18px;
    padding: 16px;
    white-space: pre;
    overflow: auto;
}

table.limit {
    margin: 5px;
}
table.limit th {
    font-weight: bold;
    text-align: center;
}
table.limit td {
    border: 1px solid #aaa;
}
table.limit th,
table.limit td {
    padding: 5px;
}
table.limit th:first-child {
    text-align: right;
}

.solutionarea input[type="text"],
.solutionarea input[type="number"] {
    width: 80px;
}
.solutionarea .short20 input[type="text"],
.solutionarea .short20 input[type="number"] {
    width: 20px;
}
.solutionarea .short25 input[type="text"],
.solutionarea .short25 input[type="number"] {
    width: 25px;
}
.solutionarea .short28 input[type="text"],
.solutionarea .short28 input[type="number"] {
    width: 28px;
}
.solutionarea .short30 input[type="text"],
.solutionarea .short30 input[type="number"] {
    width: 30px;
}
.solutionarea .short32 input[type="text"],
.solutionarea .short32 input[type="number"] {
    width: 32px;
}
.solutionarea .short35 input[type="text"],
.solutionarea .short35 input[type="number"] {
    width: 35px;
}
.solutionarea .short40 input[type="text"],
.solutionarea .short40 input[type="number"] {
    width: 40px;
}
.solutionarea .short50 input[type="text"],
.solutionarea .short50 input[type="number"] {
    width: 50px;
}
#readonly {
    display: none;
}

.radical .surd {
    font: 150% Arial;
    padding: 0 0 0 5px;
}
.radical .overline {
    border-top: 1px solid #000;
    padding: 6px 1px 0 3px;
    margin-left: -1px;
}
.solutionarea .radical input[type="text"],
.solutionarea .radical input[type="number"] {
    width: 40px;
}

body.debug .graphie {
    outline: 1px dashed #fdd;
}
.graphie svg {
    position: absolute;
    top: 0;
    left: 0;
}

#scratchpad {
    display: none;
    margin: 0 10px;
    overflow: hidden;
    padding-bottom: 40px;
}
#scratchpad div {
    box-sizing: border-box;
    border: 1px solid #ccc;
    height: 100%;
    position: absolute;
    width: 100%;
    z-index: 1;
}

#scratchpad-not-available {
    display: none;
}
#extras .report-issue-link {
    float: right;
}

#tester-info.info-box {
    background: #f2e4bf;
}
#tester-info .box {
    border: 1px solid black;
    padding: 2px 4px;
    margin-left: 5px;
}
#tester-info .group-box {
    border: 1px solid #aaa;
    padding: 6px 4px 6px 0px;
    margin-left: 2px;
}

#browserwarning {
    background: white;
    margin: 0 1px;
    padding: 18px;
    font-size: 120%;
    text-align: center;
}

#answer_area .answer-buttons input.simple-button,
#answer_area input.simple-button.full-width {
    width: 100%;
}
#answer_area #answercontent {
    position: relative;
    z-index: 2;
} /* above-scratchpad */
#answer_area .hint-box {
    position: relative;
    z-index: 1;
}

#problemarea a:link,
#problemarea input,
#problemarea label,  /* HACK(aria): for radios */
#problemarea select {
    /* for dropdowns */
    position: relative;
    z-index: 3; /* interactive-content */
}

#answer_area .calculator {
    width: 181px;
    margin: 0 auto;
}

.calculator-angle-mode .selected-anglemode {
    color: #050505;
}

.calculator-angle-mode .unselected-anglemode {
    color: #bbbbbb;
}

#answer_area .calculator .history {
    font: 14px/1.5 Menlo, Monaco, Courier, monospace;
    margin: 0 0 10px;
    width: 183px;

    background-color: white;
    border-radius: 5px;
}

#answer_area .calculator .history #calc-output-content {
    position: absolute;
    bottom: 0px;
    width: 100%;
    overflow-y: scroll;
    overflow-x: hidden;
    max-height: 80px;
}

#answer_area .calculator .history #calc-output {
    height: 80px;
    text-align: left;
    overflow-y: hidden;
    overflow-x: hidden;
    position: relative;
}

#answer_area .calculator .history .output {
    text-align: right;
    margin-right: 3px;
}

#answer_area .calculator .history input {
    box-sizing: border-box;
    display: block;
    font: inherit;
    margin: 5px 3px 3px;
    width: 98%;
    padding-left: 25px;
    padding-right: 8px;
    text-align: right;
    border: none;
    outline-width: 0;
}

#answer_area .calculator .history .input {
    position: relative;
}

#answer_area .calculator .history .input-history {
    position: relative;
    margin-left: 3px;
}

#answer_area .calculator .history .status a {
    position: absolute;
    font: 10px/1.5 Menlo, Monaco, Courier, monospace;
    color: #999;
    text-decoration: none;
    line-height: 9px;
    height: 19px;
    top: 5px;
    left: 6px;
}

#answer_area .calculator .keypad .calc-row {
    margin: 5px 0;
}

#answer_area .calculator .keypad .calc-row a {
    background: #ccc;
    border-radius: 2px;
    color: #000;
    display: inline-block;
    margin: 0 5px 0 0;
    text-align: center;
    text-decoration: none;
    width: 31px;
}

#answer_area .calculator .keypad .calc-row a:hover {
    background: #bbb;
}

#answer_area .calculator .keypad .calc-row a:active {
    background: #aaa;
}

#answer_area .calculator .keypad .calc-row a.dark {
    background: #aaa;
}

#answer_area .calculator .keypad .calc-row a.dark:hover {
    background: #999;
}

#answer_area .calculator .keypad .calc-row a.dark:active {
    background: #888;
}

#answer_area .calculator .keypad a sup {
    vertical-align: super;
    font-size: 80%;
    line-height: 0;
}

#answer_area .calculator .keypad a.wide {
    width: 67px;
}

#solutionarea {
    min-height: 35px;
    padding: 10px;
    margin: 0 -10px;
    border-bottom: 1px solid #c3c3c3;
    overflow: visible;
}

.workarea #solutionarea {
    border-bottom: 0;
    padding-bottom: 0;
    padding-top: 0;
}

#answer_area .answer-buttons {
    margin: 0 -10px;
    padding: 10px 10px 0;
    position: relative;
}

#show-prereqs-button {
    margin-top: 15px;
}

#positive-reinforcement img {
    width: 28px;
    position: absolute;
    top: 7px;
    left: 5px;
    cursor: pointer;
}

#answer_area input.simple-button[disabled="disabled"] {
    opacity: 0.5;
    filter: alpha(opacity = 50);
    cursor: default;
}
#answer_area input.simple-button[disabled="disabled"]:hover {
    color: #fff !important;
}
#answer_area input.simple-button.orange[disabled="disabled"]:hover {
    border-color: #bf4f04 !important;
    border-bottom-color: #803503 !important;
}
#answer_area input.simple-button.green[disabled="disabled"]:hover {
    border-color: #76a005 !important;
    border-bottom-color: #557303 !important;
}

.simple-button.disabled {
    opacity: 0.5;
    filter: alpha(opacity = 50);
    cursor: default;
}

#hint-remainder {
    color: #777;
}

#footer .simple-button,
.info-box .simple-button {
    padding: 3px 10px;
    top: -1px;
}
.info-box .simple-button {
    top: 0;
}

#issue #issue-status.error {
    font-weight: bold;
    color: #a21;
    font-size: 1.2em;
}
#issue-link {
    font-style: italic;
}
#issue .issue-form input[type="text"] {
    display: block;
    width: 98%;
}
#issue .issue-form textarea {
    display: block;
    width: 98%;
    height: 100px;
}
#issue-cancel {
    float: right;
}
#issue fieldset {
    list-style: none;
    border: 1px solid rgba(0, 0, 0, 0.3);
    padding-left: 10px;
    border-radius: 5px;
    line-height: 22px;
    margin-bottom: 3px;
    min-inline-size: auto;
}
#issue fieldset legend {
    padding-left: 5px;
    padding-right: 5px;
}
#issue fieldset label {
    display: inline;
}
#issue fieldset li {
    margin-top: 0px;
    margin-bottom: 0px;
}

var,
div.graphie {
    white-space: pre;
    /**
   * Graphie didn't have a fixed font-size and was just using
   * the surrounding font-size. However some labels are banking on
   * specific dimensions, so we need to lock it to a specific size.
   */
    font-size: 14px;
}

#spinner {
    position: relative;
    top: 4px;
    left: 4px;
}
#issue-spinner {
    position: relative;
    top: 3px;
}

.exp input {
    vertical-align: super;
    font-size: 9px;
    height: 11px;
}

.correct-activity {
    background-color: #69bb00;
    text-shadow: 0 -1px 0 #557303;
}

.incorrect-activity {
    background-color: #e12c2d;
    text-shadow: 0 -1px 0 #921118;
}

.hint-activity {
    background-color: #f19726;
    text-shadow: 0 -1px 0 #b55c00;
}

.user-activity {
    margin: 8px;
    padding: 2px 5px;
    border: 1px solid #999;
    border-radius: 4px;
    float: left;
    cursor: pointer;
    color: white;
}

.user-activity input {
    cursor: pointer;
}

div.timeline-time {
    float: left;
    padding-top: 10px;
}

div.timeline-time:before {
    padding: 3px;
    content: "~";
}

div.timeline-time:after {
    padding: 3px;
    content: "~";
}

div.timeline-total {
    border-top: 1px solid #999;
}

#timelinecontainer {
    border: 1px solid #c6d1ad;
    border-top: 0px;
    position: relative;
}

#timelinecontainer:before,
#timelinecontainer:after {
    content: "";
    display: table;
}

#timelinecontainer:after {
    clear: both;
}

#timelinecontainer {
    zoom: 1;
}

#timeline {
    overflow: hidden;
    position: absolute;
    left: 265px;
    right: 225px;
    border-left: 1px solid #c6d1ad;
    border-right: 1px solid #c6d1ad;
}

#timeline-events {
    width: 10000px;
}

/* Allow the timeline to scroll all the way to the end with a little margin */
#timeline-events:after,
#timeline-events:before {
    content: "";
    display: block;
    width: 1px;
    height: 1px;
    float: left;
}

#timeline p {
    margin: 0;
}

#previous-problem {
    margin: 5px;
    cursor: pointer;
    float: left;
    width: 100px;
}

#next-problem {
    margin: 5px;
    cursor: pointer;
    float: right;
    width: 80px;
}

.user-activity.activated {
    border: 2px solid #888;
}

/* Version of the site used by Khan/exercise-browser for the iframe preview */

html.exercise-browser {
    overflow-x: hidden;
    overflow-y: hidden;
}

.exercise-browser body {
    min-width: 0;
    width: 790px;
    overflow-x: hidden;
    overflow-y: auto;
}

.exercise-browser header,
.exercise-browser footer,
.exercise-browser .topic-exercise-badge,
.exercise-browser #extras,
.exercise-browser .exercises-stack,
.exercise-browser .related-video-box {
    display: none !important;
}

.exercise-browser #outer-wrapper,
.exercise-browser #page-container,
.exercise-browser #page-container-inner {
    background: #ffffff;
}

.exercise-browser article {
    border: none;
}

.exercise-browser #container.single-exercise {
    min-width: 0;
}

.exercise-browser #page-container {
    width: 790px;
    min-width: 0;
}

.exercise-browser .problem-types {
    margin-right: 20px;
}

.exercise-browser .problem-type-link {
    display: block;
    margin-bottom: 5px;
    padding: 6px;
    background: #36a6c4;
    border-radius: 5px;
    border: 1px solid #7fc8e6;
    color: white;
}

.exercise-browser .problem-type-link:hover {
    color: white;
    background: #1c758c;
    text-decoration: none;
}

.exercise-browser .problem-type-link:visited {
    color: #c2eaff;
    text-decoration: none;
}

.lite header,
.lite footer,
.lite #extras,
.lite .exercise-badge,
.lite .hint-box,
.lite .related-video-box {
    display: none !important;
}

.lite #page-container,
.lite #container {
    min-width: 0;
    border-width: 0;
}

.lite #streak-bar-container {
    position: absolute;
    top: 10px;
    left: 15px;
}

.lite #answercontent {
    position: absolute;
    right: 5px;
    top: 12px;
    padding: 0px;
    border: none;
    box-shadow: none;
    overflow: visible;
}

.lite #answercontent > * {
    float: left;
    margin-right: 10px;
}

/* TODO: Find a better way to display these. */
.lite #spinner,
.lite #check-answer-results {
    display: none !important;
}

.lite #answercontent .info-box-header {
    font-size: 16px;
}

.lite #answercontent .examples {
    display: none !important;
}

.lite .ui-icon {
    width: 18px;
    height: 18px;
}

.lite h1 {
    font-family: inherit;
}

.lite #solutionarea input {
    font-size: 14px;
}

.lite #answercontent .simple-button {
    margin-top: -5px;
    color: #fff !important;
    font-size: 14px;
    text-shadow: none;
}

#warning-bar {
    width: 100%;
    height: 35px;
    text-align: center;
    font-size: 15px;
    display: none;
    padding: 6px 0;
    position: relative;
    z-index: 2;
}

.bibliotron-exercise #warning-bar {
    height: auto;
}

#warning-bar span {
    position: relative;
    top: 5px;
}

.bibliotron-exercise #warning-bar span,
.bibliotron-exercise #warning-bar #warning-bar-close {
    top: auto;
}

#warning-bar-close {
    top: 5px;
    float: right;
    right: 20px;
    position: relative;
}

#warning-bar-content a {
    text-decoration: underline;
}

#warning-bar.error {
    background-color: #d61914;
    color: #eee;
}

#warning-bar.error a {
    color: #eee;
}

#warning-bar.warning {
    background-color: #f5e722;
    color: #222;
}

#warning-bar.warning a {
    color: #222;
}

/* Faux table styles that allow revealing data row by row in hints */

.fake_header > span {
    font-weight: bold;
    display: inline-block;
    padding-left: 10px;
    border-bottom: 2px solid #cccccc;
}

.fake_row > span {
    display: inline-block;
    padding-top: 5px;
    padding-bottom: 5px;
    padding-left: 10px;
    border-bottom: 1px solid #ddd;
}

.fake_row:nth-child(n) > span {
    border-bottom: none;
}

.fake_row:nth-child(2n + 1) > span {
    background-color: #f3f3f3;
}

#timelinecontainer .simple-button {
    -webkit-user-select: none;
    user-select: none;
    white-space: nowrap;
}

.thumbnail a {
    outline: none;
    color: #fff;
}

.thumbnail a:hover {
    text-decoration: none;
}

.thumbnail div.thumb {
    background-size: 200px 150px;
    background-position: no-repeat top left;
    background-position: 0px -25px;
    background-position-y: -80px\9;
    background-position-x: -100px\9;
    width: 200px;
    height: 100px;
    border: 1px solid #aaa;
    box-shadow: 0 0 3px #ccc;
    margin-left: 14px; /* to line up with other titles */
    margin-bottom: 8px;
    margin-top: 4px;
}

.thumbnail div.thumbnail_label {
    padding: 5px 10px;
    max-width: 180px;
    margin: 0;
    text-align: left;
    margin-top: 68px;
    background: #333;
    background-color: rgba(30, 30, 30, 0.9);
    color: #fff;
    overflow: hidden;
    text-overflow: ellipsis;
}

.thumbnail div.thumbnail_desc {
    width: 180px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.thumbnail div.thumbnail_teaser {
    height: 0px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: normal;
    text-decoration: none;
    font-size: 11px;
}

.sortable {
    background: #eee;
    border: 1px solid #ccc;
    border-bottom: 1px solid #aaa;
    padding: 13px;
    position: relative;
    z-index: 2;

    box-shadow: 0 1px 2px #ccc;
}

.sortable > ul {
    list-style-type: none;
}

.sortable > ul > li {
    background-color: #fff;
    border: 1px solid #b9b9b9;
    border-bottom-color: #939393;
    border-radius: 4px;
    cursor: pointer;
    margin-right: 4px;
    min-width: 65px;
    height: 65px;
    text-align: center;
    font-size: 1.2em;
    float: left;
    -webkit-user-select: none;
    user-select: none;
}

.sortable > ul > li.placeholder {
    background: #ddd;
    border: 0;
    border: 1px solid #ccc;
    float: left;
}

.sortable code {
    line-height: 65px;
}

.sortable > ul > li:hover {
    border-color: #ffa500;
    box-shadow: 0 0 4px #c56f00;
}

.sortable > ul > li:active,
.sortable > ul > li.dragging {
    background-color: #ffedcd;
    opacity: 0.8;
    filter: alpha(opacity = 80);
}

.box-whisker-sortable > .sortable {
    background: #f8f8f8;
    border: 0;
    border-bottom: 0;
    box-shadow: 0 0 0;
    padding-right: 0;
}

.box-whisker-sortable > .sortable > ul > li {
    width: 28px;
    min-width: 28px;
    height: 28px;
    margin-right: 2px;
    font-size: 1em;
    border: 1px solid #ddd;
}
.box-whisker-sortable > .sortable code {
    line-height: 32px;
}

#problemarea div#congruent-triangles {
    outline-color: #999;
    outline-style: dashed;
    outline-width: 1px;
}

/* Video hints */

.video-hint {
    margin-bottom: 20px;
}

/* Question-based hints */

.qhint {
    border: 1px solid #aaaaaa;
    background: #f9f9f9;
    border-radius: 4px;
    margin-right: 20px;
    margin-bottom: 20px;
    padding: 10px;
}

.qhint-answer {
    display: none;
}

.qhint-feedback {
    font-weight: bold;
    color: #6495ed;
}

.qhint-feedback.correct {
    color: #28ae7b;
}

.qhint-feedback.incorrect {
    color: #ce4444;
}

/*Worked example hints*/
.example-hint {
    margin-bottom: 15px;
}

/* Fancy matrix input - goes along with matrix-input.js */
.matrix-input {
    padding: 15px;
    margin-top: 10px;
    background-color: #eee;
    width: 165px;
}

.solutionarea .matrix-row {
    float: left; /* contain inner floats */
    clear: both;
}

.solutionarea .matrix-row .sol {
    margin: 0;
    float: left;
}

.solutionarea .matrix-row .sol input[type="text"],
.solutionarea .matrix-row .sol input[type="number"] {
    width: 45px;
    height: 30px;
    border: none;
    margin: 3px;
    padding: 1px;
}

.matrix-input .matrix-bracket {
    width: 6px;
    position: absolute;
    border-top: 2px solid #888;
    border-bottom: 2px solid #888;
    /* margin-top must have the same magnitude
       as the border widths */
    margin-top: -2px;
}

.matrix-input .matrix-bracket.bracket-left {
    border-left: 2px solid #888;
    /* margin-left for the left bracket must have
       the same magnitude as the border widths */
    margin-left: -2px;
}

.matrix-input .matrix-bracket.bracket-right {
    border-right: 2px solid #888;
}

.matrix-input:after {
    content: "";
    display: block;
    clear: both;
    visibility: hidden;
    overflow: hidden;
    height: 0;
}

table.periodic-table td.element {
    border: 1px solid;
    min-width: 37px;
    min-height: 37px;
    text-align: center;
    line-height: 1.2;
}

table.periodic-table td.element div.atomic-num {
}
table.periodic-table td.element div.symbol {
    font-weight: bold;
}
table.periodic-table td.element div.weight {
    font-size: 10px;
}

.plugging_in_values > span {
    width: 80px;
}
table.plugging_in_values_hint td {
    padding-left: 40px;
}

span.hover-hint {
    color: #005987;
    border-bottom: 1px dashed #005987;
}
span.hover-hint:hover {
    color: #678d00;
    border-bottom: 1px dashed #678d00;
    cursor: pointer;
}

.vis-deriv-hint-graph {
    display: block;
    float: left;
    margin-right: 50px;
}

#problemarea .quarter-graph {
    float: left;
    margin-bottom: 45px;
    margin-right: 45px;
}

#problemarea .estimation span {
    width: 100px;
}
#problemarea .estimation span:first-child {
    width: 50px;
}

#solutionarea table.rational-exp td {
    text-align: center;
    vertical-align: middle;
    padding-left: 4px;
    padding-right: 4px;
}
#solutionarea table.rational-exp td.soln-top {
    padding-bottom: 1px;
}
#solutionarea table.rational-exp td.soln-bot {
    padding-top: 1px;
    border-top: 1px solid black;
}

#solutionarea table.rational-exp td.soln-dom {
    padding-left: 3px;
}

#problemarea div.z-score-table > span {
    width: 32px;
    font-size: 11px;
    padding: 5px;
}

#problemarea div.z-score-table > span:first-child {
    font-weight: bold;
    width: 22px;
    border-right: 2px solid #cccccc;
}

#problemarea div.focus-information {
    padding-bottom: 12px;
    height: 70px;
    clear: both;
}

#problemarea div.focus-information div {
    display: block;
}
#problemarea div.focus-information-column-left {
    float: left;
    width: 30%;
}
#problemarea div.focus-information-column-right {
    float: right;
    width: 55%;
}

#problemarea .reading-tables > span {
    text-align: center;
    width: 65px;
}
#problemarea .reading-tables > span:first-child {
    text-align: left;
    width: 100px;
}

#problemarea .reading > span {
    width: 32px;
    font-size: 11px;
    padding: 5px;
}

#problemarea .reading.fake_header > span {
    text-align: center;
}

#problemarea .reading > span:first-child {
    font-weight: bold;
    width: 22px;
    border-right: 2px solid #cccccc;
}

#problemarea .problem .graph-caption {
    display: block;
    margin-top: 10px;
    margin-bottom: 30px;
}

#solutionarea .intuition-equation td {
    text-align: right;
    padding-left: 5px;
}

.question li span.sort-key {
    visibility: hidden;
    position: absolute;
}

.problem table.problem-equation td {
    padding-left: 3px;
    padding-right: 3px;
    text-align: center;
}
.problem table.problem-equation input {
    width: 25px;
    margin-right: 5px;
    vertical-align: super;
}

#coin-flip-sequence-charts {
    height: 324px;
    position: relative;
    width: 496px;
}

#coin-flip-sequence-charts .graphie {
    height: 324px;
    width: 496px;
    position: absolute !important;
}

#coin-flip-sequence-chart-1 {
    left: 496px;
}

#coin-flip-sequence-chart-2 {
    left: 992px;
}

#coin-flip-sequence-chart-3 {
    left: 1488px;
}

.view-coin-flip-sequence-patterns {
    margin-top: 12px;
}

.view-coin-flip-sequence-patterns span {
    color: #ccc;
}

.view-coin-flip-sequence-patterns a {
    margin: 0 5px;
}

.view-coin-flip-sequence-patterns a.selected {
    font-weight: bold;
    color: #444 !important;
    cursor: default;
    text-decoration: none !important;
}

.coin-flip-sequence-heads {
    background: #a6a6a6;
    color: #333;
}

.coin-flip-sequence-heads,
.coin-flip-sequence-tails {
    border-right: 1px solid #888;
    float: left;
    font-family: Verdana, sans-serif;
    font-size: 14px;
    margin-bottom: 5px;
    padding: 0 2px;
    text-align: center;
    width: 16px;
}

.coin-flip-sequence-tails {
    background: #595959;
    color: #ccc;
}

body.debug span.error {
    font-weight: bold;
    color: #fff;
    background: #f00;
    font-size: 1.4em;
    padding: 0.2em;
    text-decoration: line-through;
}

/* Work around bug added in https://khanacademy.kilnhg.com/Review/K109777 */
.new-header .MathJax .math {
    color: inherit;
}

.solutionarea .info-box .mini-button {
    margin: 0px 10px 0px 0px;
    padding: 0px 5px;
    width: 25px;
    height: 18px;
}

.solutionarea #number-label {
    clear: both;
    margin: 0px 0px;
    padding: 14px 0px 0px 0px;
}

/* Expression/equation input (see "expression" answer type) */
.solutionarea .expression {
    box-sizing: border-box;
    display: block;
    max-width: 240px;
    width: 100%;
}

.solutionarea .expression > .output {
    background: #f2f2f2;
    display: inline-block;
    border-radius: 5px;
    padding-top: 10px;
    margin: 10px 0;
    /* HACK(aria) above scratchpad so that users have somewhere to
     * "click off of" to hide the expression dialog.
     * Also important because it can get a silly scrollbar and we
     * want users to be able to scroll even if the scratchpad is
     * open. We should probably make this wider eventually. */
    position: relative;
    z-index: 2;
}

.solutionarea .expression > .output > .tex {
    display: block;
    min-height: 42px;
    overflow-x: scroll;
    padding: 2px 10px 16px 10px;
}

.solutionarea .expression > .input {
    position: relative;
    z-index: 3; /* interactive-content */
}

.solutionarea .expression > .input > input {
    border: 1px solid #a4a4a4;
    border-radius: 5px;
    direction: ltr;
    font-size: 14px;
    margin-bottom: 5px;
    padding: 6px;
}

.solutionarea .expression > .output,
.solutionarea .expression > .output > .tex,
.solutionarea .expression > .input > input {
    box-sizing: border-box;
    max-width: 240px;
    width: 100%;
}

.solutionarea .expression > .input > input.error {
    padding-right: 25px;
}

.solutionarea .expression > .input > .error-div {
    position: absolute;
    right: 6px;
    top: -3px;
}

.solutionarea .expression > .input > .error-div > .error-icon {
    color: #fcc335;
    font-size: 20px;
}

body:not(.mobile) ul.inequalities-one-line-radios,
body:not(.mobile) ul.inequalities-one-line-radios > li {
    display: inline;
}

body.mobile ul.inequalities-one-line-radios > li {
    padding: 7px 0;
}

.inequalities-padding#grid {
    margin-bottom: 2em;
}

#skip-question-button,
#opt-out-button {
    margin-top: 15px;
}

.perseus-sr-only {
  border: 0;
  clip: rect(0, 0, 0, 0);
  font-size: 0;
  height: 1px;
  margin: -1px;
  overflow: hidden;
  padding: 0;
  position: absolute;
  width: 1px;
}
.perseus-clearfix {
  *zoom: 1;
}
.perseus-clearfix:before,
.perseus-clearfix:after {
  content: "";
  display: table;
}
.perseus-clearfix:after {
  clear: both;
}
/* Fall back colors? Eg educator, talks & interviews */
.framework-perseus.perseus-article:not(.perseus-mobile) .perseus-widget-container:not(.perseus-widget__definition) {
  font-size: 14px;
  line-height: 19.6px;
}
.framework-perseus.perseus-article:not(.perseus-mobile) .perseus-widget-container.widget-float-left,
.framework-perseus.perseus-article:not(.perseus-mobile) .perseus-widget-container.widget-float-right {
  max-width: 50%;
  padding-top: 32px;
  width: 100%;
}
.framework-perseus.perseus-article:not(.perseus-mobile) .perseus-widget-container.widget-float-left .perseus-image-caption .paragraph .paragraph,
.framework-perseus.perseus-article:not(.perseus-mobile) .perseus-widget-container.widget-float-right .perseus-image-caption .paragraph .paragraph {
  margin-bottom: 0;
}
.framework-perseus.perseus-article:not(.perseus-mobile) .perseus-widget-container.widget-float-left {
  float: left;
  padding-right: 32px;
}
.framework-perseus.perseus-article:not(.perseus-mobile) .perseus-widget-container.widget-float-right {
  float: right;
  padding-left: 32px;
}
.framework-perseus.perseus-article:not(.perseus-mobile) .perseus-renderer > .paragraph {
  color: #21242c;
  font-size: 20px;
  line-height: 30px;
  margin: 0 auto;
  max-width: 688px;
}
.framework-perseus.perseus-article:not(.perseus-mobile) .perseus-renderer > .paragraph .paragraph {
  color: #21242c;
  font-size: 20px;
  line-height: 30px;
  margin-bottom: 32px;
  margin-top: 0;
}
.framework-perseus.perseus-article:not(.perseus-mobile) .perseus-renderer > .paragraph .katex,
.framework-perseus.perseus-article:not(.perseus-mobile) .perseus-renderer > .paragraph mjx-container {
  font-size: 100%;
}
.framework-perseus.perseus-article:not(.perseus-mobile) .perseus-renderer > .paragraph ul:not(.perseus-widget-radio) {
  color: #21242c;
  font-size: 20px;
  line-height: 30px;
}
.framework-perseus.perseus-article:not(.perseus-mobile) table {
  color: #21242c;
  font-size: 20px;
  line-height: 30px;
  margin-bottom: 32px;
}
.framework-perseus.perseus-article:not(.perseus-mobile) h2 {
  font-family: inherit;
  font-size: 30px;
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: 16px;
  margin-top: 48px;
}
.framework-perseus.perseus-article:not(.perseus-mobile) h3 {
  font-family: inherit;
  font-size: 26px;
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: 16px;
  margin-top: 32px;
}
.framework-perseus.perseus-article:not(.perseus-mobile) h4,
.framework-perseus.perseus-article:not(.perseus-mobile) h5,
.framework-perseus.perseus-article:not(.perseus-mobile) h6 {
  font-family: inherit;
  font-size: 22px;
  font-weight: 700;
  line-height: 25px;
  margin-bottom: 16px;
  margin-top: 32px;
}
.framework-perseus.perseus-article:not(.perseus-mobile) blockquote {
  padding: 0 32px;
}
.framework-perseus.perseus-article:not(.perseus-mobile) .MathJax .math {
  color: inherit;
}
.framework-perseus.perseus-article:not(.perseus-mobile) .perseus-image-caption .perseus-renderer .paragraph .paragraph,
.framework-perseus.perseus-article:not(.perseus-mobile) .perseus-image-caption .perseus-renderer .paragraph ol,
.framework-perseus.perseus-article:not(.perseus-mobile) .perseus-image-caption .perseus-renderer .paragraph ul {
  color: rgba(33, 36, 44, 0.64);
  font-size: 14px;
  line-height: 19px;
  margin: 16px auto 42px;
  text-align: left;
}
.framework-perseus.perseus-article:not(.perseus-mobile) .paragraph.perseus-paragraph-full-width {
  margin-bottom: 32px;
  margin-left: 0;
  margin-right: 0;
  max-width: none;
}
.framework-perseus.perseus-article:not(.perseus-mobile) .paragraph.perseus-paragraph-full-width > .paragraph {
  margin: 0;
  max-width: none;
}
.framework-perseus.perseus-article:not(.perseus-mobile) .unresponsive-svg-image,
.framework-perseus.perseus-article:not(.perseus-mobile) .svg-image {
  font-size: 14px;
  line-height: 19.6px;
}
.framework-perseus.perseus-article:not(.perseus-mobile) .perseus-block-math {
  margin-bottom: 32px;
  position: relative;
}
.framework-perseus.perseus-article:not(.perseus-mobile) .perseus-block-math:before {
  bottom: 0;
  content: "";
  position: absolute;
  right: 0;
  top: 0;
  width: 30px;
}
.framework-perseus.perseus-article:not(.perseus-mobile) .perseus-block-math-inner {
  overflow-x: auto;
  padding-bottom: 8px;
  padding-right: 20px;
  padding-top: 8px;
}
.framework-perseus.perseus-article:not(.perseus-mobile) > .clearfix:first-child > .perseus-renderer:first-child > .paragraph:first-child h1:first-child,
.framework-perseus.perseus-article:not(.perseus-mobile) > .clearfix:first-child > .perseus-renderer:first-child > .paragraph:first-child h2:first-child,
.framework-perseus.perseus-article:not(.perseus-mobile) > .clearfix:first-child > .perseus-renderer:first-child > .paragraph:first-child h3:first-child,
.framework-perseus.perseus-article:not(.perseus-mobile) > .clearfix:first-child > .perseus-renderer:first-child > .paragraph:first-child h4:first-child,
.framework-perseus.perseus-article:not(.perseus-mobile) > .clearfix:first-child > .perseus-renderer:first-child > .paragraph:first-child h5:first-child,
.framework-perseus.perseus-article:not(.perseus-mobile) > .clearfix:first-child > .perseus-renderer:first-child > .paragraph:first-child h6:first-child {
  margin-top: 0;
}
.framework-perseus.perseus-article:not(.perseus-mobile) .perseus-renderer > .paragraph .perseus-formats-tooltip {
  padding: 8px 12px;
}
.framework-perseus.perseus-article:not(.perseus-mobile) .perseus-renderer > .paragraph .perseus-formats-tooltip .paragraph {
  margin-bottom: 0;
}
.framework-perseus.perseus-article:not(.perseus-mobile) .perseus-renderer > .paragraph .perseus-formats-tooltip .paragraph ul:not(.perseus-widget-radio) {
  font-size: 15px;
  line-height: 1.5;
  margin: 0;
}
.framework-perseus.perseus-article:not(.perseus-mobile) code {
  font-family: Courier, monospace;
}
.framework-perseus.perseus-article:not(.perseus-mobile) pre {
  background-color: #f0f1f2;
  border-radius: 4px;
  color: #21242c;
  font-size: 18px;
  padding: 16px;
  white-space: pre;
  overflow: auto;
  margin: 0 -16px 32px -16px;
}
.framework-perseus:not(.perseus-article):not(.perseus-mobile) .perseus-radio-option-content .perseus-renderer > .paragraph {
  font-family: inherit;
  font-size: 14px;
  line-height: 1.25;
  color: #21242c;
}
.framework-perseus:not(.perseus-article):not(.perseus-mobile) .perseus-radio-option-content .perseus-renderer > .paragraph .paragraph {
  font-family: inherit;
  font-size: 14px;
  line-height: 1.25;
  color: #21242c;
}
.framework-perseus:not(.perseus-article):not(.perseus-mobile) .perseus-radio-rationale-content .perseus-renderer > .paragraph {
  font-family: inherit;
  font-size: 14px;
  line-height: 1.25;
  color: #21242c;
}
.framework-perseus:not(.perseus-article):not(.perseus-mobile) .perseus-radio-rationale-content .perseus-renderer > .paragraph .paragraph {
  font-family: inherit;
  font-size: 14px;
  line-height: 1.25;
  color: #21242c;
}
.framework-perseus:not(.perseus-article):not(.perseus-mobile) .perseus-radio-rationale-content .perseus-renderer > .paragraph .paragraph .katex,
.framework-perseus:not(.perseus-article):not(.perseus-mobile) .perseus-radio-rationale-content .perseus-renderer > .paragraph .paragraph mjx-container {
  color: #21242c;
}
.framework-perseus.perseus-mobile .perseus-article .perseus-widget-container.widget-float-left {
  float: left;
  padding-right: 1em;
  max-width: 50%;
  width: 100%;
}
.framework-perseus.perseus-mobile .perseus-article .perseus-widget-container.widget-float-right {
  float: right;
  padding-left: 1em;
  max-width: 50%;
  width: 100%;
}
.framework-perseus.perseus-mobile .perseus-article .perseus-renderer > .paragraph {
  margin-left: auto;
  margin-right: auto;
  max-width: 700px;
}
.framework-perseus.perseus-mobile .perseus-article .paragraph.perseus-paragraph-full-width {
  margin-left: 0;
  margin-right: 0;
  max-width: none;
}
.framework-perseus.perseus-mobile .perseus-article .paragraph.perseus-paragraph-full-width > .paragraph {
  margin: 0;
  max-width: none;
}
.framework-perseus.perseus-mobile :not(blockquote) > div.paragraph {
  margin: 0;
}
.framework-perseus.perseus-mobile .perseus-renderer > .paragraph {
  margin: 0 auto;
}
.framework-perseus.perseus-mobile .perseus-renderer > .paragraph:not(:first-child) {
  margin-top: 32px;
}
.framework-perseus.perseus-mobile .perseus-renderer > .paragraph > .paragraph {
  margin: 0;
}
.framework-perseus.perseus-mobile .clearfix > .perseus-renderer {
  margin-bottom: 32px;
}
.framework-perseus.perseus-mobile .perseus-renderer > .paragraph ul:not(.perseus-widget-radio, .indicatorContainer) {
  margin: 0 0 0 1em;
  padding: 0;
}
.framework-perseus.perseus-mobile .perseus-renderer > .paragraph ul:not(.perseus-widget-radio, .indicatorContainer) > li {
  padding-left: 10px;
  margin-bottom: 24px;
}
.framework-perseus.perseus-mobile .perseus-renderer > .paragraph ol {
  margin: 0;
  padding-left: 32px;
}
.framework-perseus.perseus-mobile .perseus-renderer > .paragraph ol > li {
  list-style-type: decimal;
  margin-bottom: 24px;
}
.framework-perseus.perseus-mobile .perseus-renderer > .paragraph ol ol,
.framework-perseus.perseus-mobile .perseus-renderer > .paragraph ul:not(.perseus-widget-radio) ol,
.framework-perseus.perseus-mobile .perseus-renderer > .paragraph ol ul:not(.perseus-widget-radio),
.framework-perseus.perseus-mobile .perseus-renderer > .paragraph ul:not(.perseus-widget-radio) ul:not(.perseus-widget-radio) {
  padding-top: 24px;
}
.framework-perseus.perseus-mobile .perseus-block-math {
  -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
  -webkit-touch-callout: none;
}
@media (max-width: 767px) {
  .framework-perseus.perseus-mobile .perseus-renderer > .paragraph {
    max-width: none;
  }
  .framework-perseus.perseus-mobile h1 {
    font-weight: 700;
    padding-top: 0px;
    font-family: inherit;
    font-size: 24px;
    line-height: 1.2;
    color: #21242c;
  }
  .framework-perseus.perseus-mobile h2 {
    font-weight: 700;
    padding-top: 16px;
    font-family: inherit;
    font-size: 24px;
    line-height: 1.2;
    color: #3b3e40;
  }
  .framework-perseus.perseus-mobile h3,
  .framework-perseus.perseus-mobile h4 {
    font-weight: 700;
    padding-top: 0px;
    font-family: inherit;
    font-size: 22px;
    line-height: 1.1;
    color: #626569;
  }
  .framework-perseus.perseus-mobile .default-body-text {
    font-family: inherit;
    font-size: 18px;
    line-height: 1.4;
    color: #626569;
  }
  .framework-perseus.perseus-mobile .perseus-renderer > .paragraph {
    font-family: inherit;
    font-size: 18px;
    line-height: 1.4;
    color: #626569;
  }
  .framework-perseus.perseus-mobile .perseus-renderer > .paragraph .paragraph {
    font-family: inherit;
    font-size: 18px;
    line-height: 1.4;
    color: #626569;
  }
  .framework-perseus.perseus-mobile .perseus-renderer > .paragraph ul:not(.perseus-widget-radio) {
    font-family: inherit;
    font-size: 18px;
    line-height: 1.4;
    color: #626569;
  }
  .framework-perseus.perseus-mobile .perseus-renderer > .paragraph ol {
    font-family: inherit;
    font-size: 18px;
    line-height: 1.4;
    color: #626569;
  }
  .framework-perseus.perseus-mobile blockquote {
    font-family: inherit;
    font-size: 18px;
    line-height: 1.4;
    color: #626569;
    color: #888d93;
  }
  .framework-perseus.perseus-mobile table {
    font-family: inherit;
    font-size: 18px;
    line-height: 1.4;
    color: #626569;
  }
  .framework-perseus.perseus-mobile .perseus-radio-option-content .perseus-renderer > .paragraph {
    font-family: inherit;
    font-size: 16px;
    line-height: 1.25;
    color: #21242c;
  }
  .framework-perseus.perseus-mobile .perseus-radio-option-content .perseus-renderer > .paragraph .paragraph {
    font-family: inherit;
    font-size: 16px;
    line-height: 1.25;
    color: #21242c;
  }
  .framework-perseus.perseus-mobile .perseus-radio-rationale-content .perseus-renderer > .paragraph {
    font-family: inherit;
    font-size: 16px;
    line-height: 1.25;
    color: #21242c;
  }
  .framework-perseus.perseus-mobile .perseus-radio-rationale-content .perseus-renderer > .paragraph .paragraph {
    font-family: inherit;
    font-size: 16px;
    line-height: 1.25;
    color: #21242c;
  }
  .framework-perseus.perseus-mobile .perseus-radio-rationale-content .perseus-renderer > .paragraph .paragraph .katex,
  .framework-perseus.perseus-mobile .perseus-radio-rationale-content .perseus-renderer > .paragraph .paragraph mjx-container {
    color: #21242c;
  }
  .framework-perseus.perseus-mobile .perseus-image-caption .paragraph .paragraph {
    color: #888d93;
    font-size: 14px;
    line-height: 1.3;
    text-align: left;
  }
  .framework-perseus.perseus-mobile .perseus-image-caption.has-title .paragraph .paragraph strong:first-child {
    color: #3b3e40;
  }
  .framework-perseus.perseus-mobile .katex,
  .framework-perseus.perseus-mobile mjx-container {
    font-size: 21px;
    line-height: 1.2;
    color: #21242c;
  }
  .framework-perseus.perseus-mobile .perseus-block-math .katex,
  .framework-perseus.perseus-mobile .perseus-block-math mjx-container {
    font-size: 21px;
    line-height: 1.5;
  }
  .framework-perseus.perseus-mobile .graphie-label .katex,
  .framework-perseus.perseus-mobile .graphie-label mjx-container {
    font-size: 1.21em;
    line-height: 1.2;
  }
  .framework-perseus.perseus-mobile code {
    font-family: Courier, monospace;
  }
  .framework-perseus.perseus-mobile pre {
    background-color: #f0f1f2;
    border-radius: 4px;
    color: #21242c;
    font-size: 18px;
    line-height: 1.6;
    padding: 16px;
    white-space: pre;
    overflow: auto;
  }
  .framework-perseus.perseus-mobile blockquote {
    padding: 0 0 0 18px;
    border-left: 4px solid #d8d8d8;
  }
}
@media (min-width: 768px) and (max-width: 1199px) {
  .framework-perseus.perseus-mobile .perseus-renderer > .paragraph {
    max-width: 512px;
  }
  .framework-perseus.perseus-mobile h1 {
    font-weight: 700;
    padding-top: 0px;
    font-family: inherit;
    font-size: 30px;
    line-height: 1.1;
    color: #21242c;
  }
  .framework-perseus.perseus-mobile h2 {
    font-weight: 700;
    padding-top: 32px;
    font-family: inherit;
    font-size: 30px;
    line-height: 1.1;
    color: #3b3e40;
  }
  .framework-perseus.perseus-mobile h3,
  .framework-perseus.perseus-mobile h4 {
    font-weight: 700;
    padding-top: 16px;
    font-family: inherit;
    font-size: 28px;
    line-height: 1.1;
    color: #626569;
  }
  .framework-perseus.perseus-mobile .default-body-text {
    font-family: inherit;
    font-size: 20px;
    line-height: 1.5;
    color: #626569;
  }
  .framework-perseus.perseus-mobile .perseus-renderer > .paragraph {
    font-family: inherit;
    font-size: 20px;
    line-height: 1.5;
    color: #626569;
  }
  .framework-perseus.perseus-mobile .perseus-renderer > .paragraph .paragraph {
    font-family: inherit;
    font-size: 20px;
    line-height: 1.5;
    color: #626569;
  }
  .framework-perseus.perseus-mobile .perseus-renderer > .paragraph ul:not(.perseus-widget-radio) {
    font-family: inherit;
    font-size: 20px;
    line-height: 1.5;
    color: #626569;
  }
  .framework-perseus.perseus-mobile .perseus-renderer > .paragraph ol {
    font-family: inherit;
    font-size: 20px;
    line-height: 1.5;
    color: #626569;
  }
  .framework-perseus.perseus-mobile blockquote {
    font-family: inherit;
    font-size: 20px;
    line-height: 1.5;
    color: #626569;
    color: #888d93;
  }
  .framework-perseus.perseus-mobile table {
    font-family: inherit;
    font-size: 20px;
    line-height: 1.5;
    color: #626569;
  }
  .framework-perseus.perseus-mobile .perseus-radio-option-content .perseus-renderer > .paragraph {
    font-family: inherit;
    font-size: 18px;
    line-height: 1.25;
    color: #21242c;
  }
  .framework-perseus.perseus-mobile .perseus-radio-option-content .perseus-renderer > .paragraph .paragraph {
    font-family: inherit;
    font-size: 18px;
    line-height: 1.25;
    color: #21242c;
  }
  .framework-perseus.perseus-mobile .perseus-radio-rationale-content .perseus-renderer > .paragraph {
    font-family: inherit;
    font-size: 18px;
    line-height: 1.25;
    color: #21242c;
  }
  .framework-perseus.perseus-mobile .perseus-radio-rationale-content .perseus-renderer > .paragraph .paragraph {
    font-family: inherit;
    font-size: 18px;
    line-height: 1.25;
    color: #21242c;
  }
  .framework-perseus.perseus-mobile .perseus-radio-rationale-content .perseus-renderer > .paragraph .paragraph .katex,
  .framework-perseus.perseus-mobile .perseus-radio-rationale-content .perseus-renderer > .paragraph .paragraph mjx-container {
    color: #21242c;
  }
  .framework-perseus.perseus-mobile .perseus-image-caption .paragraph .paragraph {
    color: #888d93;
    font-size: 17px;
    line-height: 1.4;
    text-align: left;
  }
  .framework-perseus.perseus-mobile .perseus-image-caption.has-title .paragraph .paragraph strong:first-child {
    color: #3b3e40;
  }
  .framework-perseus.perseus-mobile .katex,
  .framework-perseus.perseus-mobile mjx-container {
    font-size: 23px;
    line-height: 1.3;
    color: #21242c;
  }
  .framework-perseus.perseus-mobile .perseus-block-math .katex,
  .framework-perseus.perseus-mobile .perseus-block-math mjx-container {
    font-size: 30px;
    line-height: 1.3;
  }
  .framework-perseus.perseus-mobile .graphie-label .katex,
  .framework-perseus.perseus-mobile .graphie-label mjx-container {
    font-size: 1.21em;
    line-height: 1.2;
  }
  .framework-perseus.perseus-mobile code {
    font-family: Courier, monospace;
  }
  .framework-perseus.perseus-mobile pre {
    background-color: #f0f1f2;
    border-radius: 4px;
    color: #21242c;
    font-size: 18px;
    line-height: 1.6;
    padding: 16px;
    white-space: pre;
    overflow: auto;
  }
  .framework-perseus.perseus-mobile blockquote {
    padding: 0 0 0 20px;
    border-left: 4px solid #d8d8d8;
  }
}
@media (min-width: 1200px) {
  .framework-perseus.perseus-mobile .perseus-renderer > .paragraph {
    max-width: 688px;
  }
  .framework-perseus.perseus-mobile h1 {
    font-weight: 700;
    padding-top: 0px;
    font-family: inherit;
    font-size: 35px;
    line-height: 1.1;
    color: #21242c;
  }
  .framework-perseus.perseus-mobile h2 {
    font-weight: 700;
    padding-top: 32px;
    font-family: inherit;
    font-size: 35px;
    line-height: 1.1;
    color: #3b3e40;
  }
  .framework-perseus.perseus-mobile h3,
  .framework-perseus.perseus-mobile h4 {
    font-weight: 700;
    padding-top: 16px;
    font-family: inherit;
    font-size: 30px;
    line-height: 1.1;
    color: #626569;
  }
  .framework-perseus.perseus-mobile .default-body-text {
    font-family: inherit;
    font-size: 22px;
    line-height: 1.4;
    color: #626569;
  }
  .framework-perseus.perseus-mobile .perseus-renderer > .paragraph {
    font-family: inherit;
    font-size: 22px;
    line-height: 1.4;
    color: #626569;
  }
  .framework-perseus.perseus-mobile .perseus-renderer > .paragraph .paragraph {
    font-family: inherit;
    font-size: 22px;
    line-height: 1.4;
    color: #626569;
  }
  .framework-perseus.perseus-mobile .perseus-renderer > .paragraph ul:not(.perseus-widget-radio) {
    font-family: inherit;
    font-size: 22px;
    line-height: 1.4;
    color: #626569;
  }
  .framework-perseus.perseus-mobile .perseus-renderer > .paragraph ol {
    font-family: inherit;
    font-size: 22px;
    line-height: 1.4;
    color: #626569;
  }
  .framework-perseus.perseus-mobile blockquote {
    font-family: inherit;
    font-size: 22px;
    line-height: 1.4;
    color: #626569;
    color: #888d93;
  }
  .framework-perseus.perseus-mobile table {
    font-family: inherit;
    font-size: 22px;
    line-height: 1.4;
    color: #626569;
  }
  .framework-perseus.perseus-mobile .perseus-radio-option-content .perseus-renderer > .paragraph {
    font-family: inherit;
    font-size: 20px;
    line-height: 1.25;
    color: #21242c;
  }
  .framework-perseus.perseus-mobile .perseus-radio-option-content .perseus-renderer > .paragraph .paragraph {
    font-family: inherit;
    font-size: 20px;
    line-height: 1.25;
    color: #21242c;
  }
  .framework-perseus.perseus-mobile .perseus-radio-rationale-content .perseus-renderer > .paragraph {
    font-family: inherit;
    font-size: 20px;
    line-height: 1.25;
    color: #21242c;
  }
  .framework-perseus.perseus-mobile .perseus-radio-rationale-content .perseus-renderer > .paragraph .paragraph {
    font-family: inherit;
    font-size: 20px;
    line-height: 1.25;
    color: #21242c;
  }
  .framework-perseus.perseus-mobile .perseus-radio-rationale-content .perseus-renderer > .paragraph .paragraph .katex,
  .framework-perseus.perseus-mobile .perseus-radio-rationale-content .perseus-renderer > .paragraph .paragraph mjx-container {
    color: #21242c;
  }
  .framework-perseus.perseus-mobile .perseus-image-caption .paragraph .paragraph {
    color: #888d93;
    font-size: 20px;
    line-height: 1.4;
    text-align: left;
  }
  .framework-perseus.perseus-mobile .perseus-image-caption.has-title .paragraph .paragraph strong:first-child {
    color: #3b3e40;
  }
  .framework-perseus.perseus-mobile .katex,
  .framework-perseus.perseus-mobile mjx-container {
    font-size: 25px;
    line-height: 1.2;
    color: #21242c;
  }
  .framework-perseus.perseus-mobile .perseus-block-math .katex,
  .framework-perseus.perseus-mobile .perseus-block-math mjx-container {
    font-size: 30px;
    line-height: 1.3;
  }
  .framework-perseus.perseus-mobile .graphie-label .katex,
  .framework-perseus.perseus-mobile .graphie-label mjx-container {
    font-size: 1.21em;
    line-height: 1.2;
  }
  .framework-perseus.perseus-mobile code {
    font-family: Courier, monospace;
  }
  .framework-perseus.perseus-mobile pre {
    background-color: #f0f1f2;
    border-radius: 4px;
    color: #21242c;
    font-size: 18px;
    line-height: 1.6;
    padding: 16px;
    white-space: pre;
    overflow: auto;
  }
  .framework-perseus.perseus-mobile blockquote {
    padding: 0 0 0 20px;
    border-left: 5px solid #d8d8d8;
  }
}
.framework-perseus.perseus-mobile .perseus-widget-container {
  font-size: 14px;
  line-height: 19.6px;
}
.framework-perseus.perseus-mobile .perseus-widget-container.widget-float-left,
.framework-perseus.perseus-mobile .perseus-widget-container.widget-float-right {
  max-width: 50%;
  padding-top: 32px;
  width: 100%;
}
.framework-perseus.perseus-mobile .perseus-widget-container.widget-float-left .perseus-image-caption .paragraph .paragraph,
.framework-perseus.perseus-mobile .perseus-widget-container.widget-float-right .perseus-image-caption .paragraph .paragraph {
  margin-bottom: 0;
}
.framework-perseus.perseus-mobile .perseus-widget-container.widget-float-left {
  float: left;
  padding-right: 32px;
}
.framework-perseus.perseus-mobile .perseus-widget-container.widget-float-right {
  float: right;
  padding-left: 32px;
}
.framework-perseus.perseus-mobile .MathJax .math {
  color: inherit;
}
.framework-perseus.perseus-mobile .perseus-image-widget {
  text-align: center;
}
.framework-perseus.perseus-mobile .perseus-block-math {
  padding-top: 16px;
  padding-bottom: 16px;
}
.framework-perseus.perseus-mobile .paragraph.perseus-paragraph-full-width {
  margin-left: 0;
  margin-right: 0;
  max-width: none;
}
.framework-perseus.perseus-mobile .paragraph.perseus-paragraph-full-width > .paragraph {
  margin: 0;
  max-width: none;
}
.framework-perseus.perseus-mobile .unresponsive-svg-image,
.framework-perseus.perseus-mobile .svg-image {
  font-size: 14px;
  line-height: 19.6px;
}
.framework-perseus.perseus-mobile .perseus-renderer > .paragraph .perseus-formats-tooltip {
  padding: 8px 12px;
}
.framework-perseus.perseus-mobile .perseus-renderer > .paragraph .perseus-formats-tooltip .paragraph {
  margin-bottom: 0;
}
.framework-perseus.perseus-mobile .perseus-renderer > .paragraph .perseus-formats-tooltip .paragraph ul:not(.perseus-widget-radio) {
  font-size: 15px;
  line-height: 1.5;
  margin: 0;
}
/* Derived from the MIT-licensed zoom.js:
   https://github.com/fat/zoom.js/blob/fd4f3e43153da7596da0bade198e99f98b47791e/
*/
.zoomable {
  cursor: pointer;
  cursor: -webkit-zoom-in;
  cursor: -moz-zoom-in;
}
.zoom-img {
  background-color: white;
  position: absolute;
  z-index: 9001;
}
img.zoom-img {
  cursor: pointer;
  cursor: -webkit-zoom-out;
  cursor: -moz-zoom-out;
}
.zoom-transition {
  transition: transform 300ms ease;
}
.zoom-overlay {
  z-index: 9000;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  overflow: scroll;
}
.zoom-overlay-open,
.zoom-overlay-transitioning {
  cursor: default;
}
.zoom-overlay-open {
  height: 100%;
  max-height: 100%;
  overflow: hidden;
}
.zoom-backdrop {
  z-index: 8999;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: white;
  opacity: 0;
  transition: opacity 300ms;
}
.zoom-overlay-open > .zoom-backdrop {
  opacity: 0.9;
}
#perseus {
  position: relative;
}
.framework-perseus.perseus-mobile {
  margin-top: 48px;
}
.no-select {
  -webkit-user-select: none;
  user-select: none;
}
.blank-background {
  background-color: #fdfdfd;
}
#answer_area .blank-background {
  background-color: transparent;
}
.above-scratchpad {
  position: relative;
  z-index: 2;
}
.graphie.above-scratchpad,
.graphie-container.above-scratchpad {
  background-color: #fdfdfd;
}
.perseus-mobile .graphie-container.above-scratchpad {
  background: #ffffff;
}
.graphie {
  -webkit-user-select: none;
  user-select: none;
}
.perseus-interactive,
.perseus-interactive.above-scratchpad {
  position: relative;
  z-index: 3;
}
#answercontent input[type=text].perseus-input-size-normal,
#answercontent input[type=number].perseus-input-size-normal,
.framework-perseus input[type=text].perseus-input-size-normal,
.framework-perseus input[type=number].perseus-input-size-normal {
  border: 1px solid #ccc;
  width: 80px;
}
#answercontent input[type=text].perseus-input-size-small,
#answercontent input[type=number].perseus-input-size-small,
.framework-perseus input[type=text].perseus-input-size-small,
.framework-perseus input[type=number].perseus-input-size-small {
  border: 1px solid #ccc;
  width: 40px;
}
#answercontent input[type=text].perseus-input-right-align,
#answercontent input[type=number].perseus-input-right-align,
.framework-perseus input[type=text].perseus-input-right-align,
.framework-perseus input[type=number].perseus-input-right-align {
  text-align: right;
}
.framework-perseus.perseus-mobile .perseus-input-right-align .keypad-input {
  text-align: right;
}
.framework-perseus div.paragraph {
  font-family: "Lato", sans-serif;
  font-weight: 400;
  font-size: 18px;
  line-height: 22px;
  margin: 22px 0px;
}
.framework-perseus .test-prep-blurb div.paragraph {
  font-size: 16px;
  line-height: 20px;
}
.framework-perseus div.instructions {
  display: block;
  font-family: "Noto Serif", serif;
  font-weight: 800;
  font-size: 18px;
  line-height: 22px;
  font-style: italic;
}
.framework-perseus .perseus-renderer > .paragraph > ul:not(.perseus-widget-radio),
.framework-perseus .perseus-renderer > .paragraph > ol {
  margin: -11px 0px 22px 0px;
}
.framework-perseus .paragraph ul:not(.perseus-widget-radio, .indicatorContainer) {
  padding-left: 35px;
  list-style-type: disc;
}
.framework-perseus .paragraph ol {
  list-style: decimal;
  padding-left: 2em;
}
.framework-perseus blockquote {
  padding: 0 2.5em;
}
.framework-perseus .zoomable {
  -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
  -webkit-touch-callout: none;
}
.framework-perseus sup:not(.mq-non-leaf) {
  font-size: smaller;
  vertical-align: super;
  line-height: 0;
}
.framework-perseus .range-input {
  border: 1px solid #ccc;
  border-radius: 5px;
  display: inline-block;
  padding: 0px 5px;
}
.framework-perseus .range-input > input {
  border: 0;
  display: inline;
  text-align: center;
  width: 30px;
}
.framework-perseus .range-input > span {
  color: #999;
  font-size: 14px;
}
.framework-perseus .number-input {
  border: 1px solid #ccc;
  border-radius: 5px;
  margin: 0;
  padding: 5px 0;
  text-align: center;
  width: 40px;
}
.framework-perseus .number-input.invalid-input {
  background-color: #cf5044;
  outline-color: red;
}
.framework-perseus .number-input.mini {
  width: 40px;
}
.framework-perseus .number-input.small {
  width: 60px;
}
.framework-perseus .number-input.normal {
  width: 80px;
}
.framework-perseus .math-output {
  display: inline-block;
  min-width: 80px;
  min-height: 36px;
  border-radius: 5px;
  padding: 0;
  margin-top: 4px;
  margin-bottom: 4px;
  background: white;
  border: 1px solid #a4a4a4;
}
.framework-perseus .graph-settings .graph-settings-axis-label {
  border: 1px solid #ccc;
  border-radius: 5px;
  display: inline-block;
  padding: 5px 5px;
  width: 70px;
  float: right;
  margin: 0 5px;
}
.framework-perseus .graph-settings .graph-settings-background-url {
  width: 250px;
}
.framework-perseus .graphie-container {
  position: relative;
}
.framework-perseus .graph-settings,
.framework-perseus .image-settings,
.framework-perseus .misc-settings {
  padding-bottom: 5px;
}
.framework-perseus .misc-settings,
.framework-perseus .type-settings {
  border-top: 1px solid black;
  padding-top: 5px;
}
.framework-perseus .svg-image {
  display: inline-block;
}
.framework-perseus .unresponsive-svg-image,
.framework-perseus .perseus-rendered-radio .unresponsive-svg-image {
  display: inline-block;
  position: relative;
}
.framework-perseus .unresponsive-svg-image > .graphie-container,
.framework-perseus .perseus-rendered-radio .unresponsive-svg-image > .graphie-container {
  position: absolute;
  top: 0;
  left: 0;
}
.framework-perseus .fixed-to-responsive {
  position: relative;
  width: 100%;
}
.framework-perseus .fixed-to-responsive > :not(:first-child) {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}
/* Legacy table styles. Remove when XOM is rolled out (see below for
   updated XOM styles). */
.framework-perseus:not(.perseus-mobile) table {
  font-size: 14px;
  line-height: 19.6px;
}
.framework-perseus:not(.perseus-mobile) table th,
.framework-perseus:not(.perseus-mobile) table td {
  padding: 5px 10px;
  text-align: left;
}
.framework-perseus:not(.perseus-mobile) table th[align="center"],
.framework-perseus:not(.perseus-mobile) table td[align="center"] {
  text-align: center;
}
.framework-perseus:not(.perseus-mobile) table th[align="right"],
.framework-perseus:not(.perseus-mobile) table td[align="right"] {
  text-align: right;
}
.framework-perseus:not(.perseus-mobile) table th {
  border-bottom: 2px solid #ccc;
  font-weight: bold;
  padding-bottom: 2px;
}
.framework-perseus:not(.perseus-mobile) table tr:nth-child(odd) td {
  background-color: #ededed;
}
.framework-perseus:not(.perseus-mobile) .perseus-titled-table {
  display: inline-block;
}
.framework-perseus:not(.perseus-mobile) .perseus-titled-table table {
  margin-left: auto;
  margin-right: auto;
}
.framework-perseus:not(.perseus-mobile) .perseus-table-title {
  text-align: center;
  font-size: larger;
}
.framework-perseus:not(.perseus-mobile) table.non-markdown tr:nth-child(odd) td {
  background-color: transparent;
}
.framework-perseus:not(.perseus-mobile) table.non-markdown th,
.framework-perseus:not(.perseus-mobile) table.non-markdown td {
  border-width: 0;
}
/* New XOM styles for tables. */
.framework-perseus.perseus-mobile {
  /* There are three kinds of tables:
       1) normal "tables" - emitted by markdown (src/perseus-markdown.jsx)
       2) "titled tables" - emitted by markdown as well (these are just
          tables with a title, and encased in one more element)
       3) "table widget" - where a user is expected to enter answers in a
          table form (src/widgets/table.jsx).
      Moreover, there the Categorizer widget uses <table> tags, so these
      stylings will apply there as well.  */
}
.framework-perseus.perseus-mobile table {
  border-collapse: collapse;
  margin: 0 auto;
}
.framework-perseus.perseus-mobile table tbody > tr {
  border: 1px solid #e5e5e5;
}
.framework-perseus.perseus-mobile table th,
.framework-perseus.perseus-mobile table td {
  padding: 16px;
  text-align: left;
}
.framework-perseus.perseus-mobile table th[align="center"],
.framework-perseus.perseus-mobile table td[align="center"] {
  text-align: center;
}
.framework-perseus.perseus-mobile table th[align="right"],
.framework-perseus.perseus-mobile table td[align="right"] {
  text-align: right;
}
.framework-perseus.perseus-mobile table td {
  background: #fff;
}
.framework-perseus.perseus-mobile table th {
  font-weight: bold;
}
@media (max-width: 767px) {
  .framework-perseus.perseus-mobile table {
    width: 100%;
    min-width: 480px;
  }
  .framework-perseus.perseus-mobile table tbody > tr {
    border-left: 0;
    border-right: 0;
  }
}
.framework-perseus.perseus-mobile .perseus-titled-table {
  display: inline-block;
}
.framework-perseus.perseus-mobile .perseus-table-title {
  text-align: center;
  font-size: larger;
}
/* Widget CSS */
.perseus-graph-padding {
  box-sizing: content-box;
  padding: 25px 25px 0 0;
}
.categorizer-container {
  margin-top: 20px;
}
.categorizer-container div.paragraph {
  margin: 10px 0px;
}
.categorizer-container .category {
  text-align: center;
}
.categorizer-container table {
  min-width: 0;
}
.categorizer-container label {
  position: relative;
  z-index: 2;
}
body.mobile .categorizer-container td.category input[type="radio"]:checked + span:before {
  color: #005a88;
}
body.mobile .categorizer-container td.category input[type="radio"] + span:active:before {
  color: #666;
  content: "\f111";
}
.perseus-widget-dropdown {
  position: relative;
}
.perseus-widget-expression {
  position: relative;
}
.perseus-widget-expression > span,
.perseus-widget-expression .error-tooltip {
  display: inline-block;
  vertical-align: middle;
}
.perseus-widget-expression .error-tooltip {
  position: absolute;
  right: 6px;
  top: -2px;
}
.perseus-widget-expression .error-icon {
  color: #fcc335;
  cursor: pointer;
  font-size: 20px;
  position: relative;
  z-index: 3;
}
.perseus-widget-expression .error-text {
  background-color: #fff;
  padding: 5px;
  width: 210px;
}
.perseus-widget-expression .perseus-formats-tooltip {
  width: 190px;
}
#answer_area .perseus-widget-expression .perseus-math-input.mq-editable-field.mq-math-mode {
  min-width: 130px;
}
#answer_area .perseus-widget-expression .error-tooltip .error-text-container {
  left: -125px !important;
  top: -17px !important;
}
#answer_area .perseus-widget-expression .error-tooltip .error-text {
  font-size: 12px;
  width: 90px;
}
#answer_area .perseus-widget-expression .error-tooltip .tooltipContainer > div:first-child {
  visibility: hidden !important;
}
.perseus-widget-grapher {
  box-sizing: content-box;
  padding: 25px 25px 0 0;
}
.perseus-widget-grapher > .graphie-container {
  position: relative;
}
.perseus-widget-grapher > .graphie-container > img,
.perseus-widget-grapher > .graphie-container .svg-image {
  position: absolute;
}
.framework-perseus .perseus-graded-group {
  position: relative;
  width: 100%;
  margin-left: 3px;
  padding-left: 5px;
}
.framework-perseus .perseus-graded-group.answer-correct {
  border-left: 3px solid #76a005;
  margin-left: 0;
}
.framework-perseus .perseus-graded-group.answer-incorrect {
  border-left: 3px solid #b2392e;
  margin-left: 0;
}
.framework-perseus .perseus-graded-group .group-icon {
  font-size: 14px;
  position: absolute;
  top: 50%;
  top: calc(50% - 7px);
  left: -30px;
  text-align: center;
  width: 16px;
}
.framework-perseus .perseus-group {
  position: relative;
  width: 100%;
}
.framework-perseus .perseus-group .group-icon {
  font-size: 14px;
  position: absolute;
  top: 50%;
  top: calc(50% - 7px);
  margin-left: -20px;
}
.perseus-image-widget {
  margin-left: auto;
  margin-right: auto;
}
.perseus-image-widget .perseus-image-title {
  text-align: center;
}
.perseus-image-widget .perseus-image-caption {
  color: rgba(33, 36, 44, 0.7);
  padding-left: 16px;
  position: relative;
}
.perseus-image-widget .perseus-image-caption::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  margin-left: 4px;
  width: 1px;
  background-color: rgba(33, 36, 44, 0.5);
  border: 1px solid rgba(33, 36, 44, 0.5);
  border-radius: 2px;
}
.perseus-image-widget .perseus-image-caption .paragraph {
  font-size: 14px;
  padding-right: 12px;
}
.perseus-image-editor .label-settings td {
  padding: 5px 4px;
  text-align: center;
}
.perseus-image-editor .label-settings tr:nth-child(odd) td {
  background-color: transparent;
}
.perseus-image-editor .label-settings th,
.perseus-image-editor .label-settings td {
  border-width: 0;
}
.perseus-image-editor .image-settings,
.perseus-image-editor .graph-settings {
  margin-top: 5px;
}
.perseus-widget-interactive-graph {
  box-sizing: content-box;
  padding: 25px 25px 0 0;
}
.perseus-widget-interactive-graph > .graphie-container {
  position: relative;
}
.perseus-widget-interactive-graph > .graphie-container > img,
.perseus-widget-interactive-graph > .graphie-container > .unresponsive-svg-image {
  position: absolute;
  bottom: 0;
  left: 0;
}
.perseus-mobile .tooltip.visible {
  z-index: 2;
}
.perseus-mobile .tooltip.visible .tooltip-content:before {
  border: solid;
  border-color: white transparent;
  border-width: 10px 10px 0 10px;
  bottom: -10px;
  content: "";
  left: 50%;
  transform: translateX(-50%);
  position: absolute;
  z-index: 2;
}
.perseus-mobile .tooltip .tooltip-content {
  display: none;
}
.perseus-mobile .tooltip.visible .tooltip-content {
  display: inline-block;
  background-color: #ffffff;
  border-radius: 5px;
  bottom: 50px;
  left: 50%;
  transform: translateX(-50%);
  padding: 5px;
  position: absolute;
  white-space: nowrap;
  min-width: 30px;
  text-align: center;
}
.perseus-mobile .tooltip.visible .tooltip-content .katex,
.perseus-mobile .tooltip.visible .tooltip-content mjx-container {
  color: #71b307 !important;
}
.perseus-mobile .graphie-label .katex,
.perseus-mobile .graphie-label mjx-container {
  color: inherit !important;
}
.framework-perseus .perseus-label-image-widget-instructions div.paragraph {
  margin: 0;
}
.framework-perseus button[id*="perseus-label-image-widget-answer-pill"] div.paragraph,
.framework-perseus div[id*="perseus-label-image-widget-answer-pill"] div.paragraph {
  all: revert;
}
.framework-perseus button[id*="perseus-label-image-widget-answer-pill"] div.perseus-block-math-inner,
.framework-perseus div[id*="perseus-label-image-widget-answer-pill"] div.perseus-block-math-inner {
  margin: -5px 0 !important;
}
@media (max-width: 767px) {
  [id*="perseus-label-image-widget-answer-pill"] div.paragraph {
    all: revert;
  }
  [id*="perseus-label-image-widget-answer-pill"] > div.perseus-renderer-responsive {
    all: revert;
  }
  .framework-perseus.perseus-mobile [id*="perseus-label-image-widget-answer-pill"] .perseus-renderer > .paragraph,
  .framework-perseus.perseus-mobile [id*="perseus-label-image-widget-answer-pill"] .perseus-renderer > .paragraph .paragraph {
    all: revert;
  }
}
.framework-perseus:not(.perseus-article).perseus-mobile .perseus-label-image-widget-instructions {
  color: initial;
}
.framework-perseus:not(.perseus-article).perseus-mobile .perseus-label-image-widget-instructions .perseus-renderer .paragraph > .paragraph {
  color: initial !important;
  font-size: initial !important;
  line-height: initial !important;
}
.framework-perseus:not(.perseus-article).perseus-mobile .perseus-label-image-widget-instructions .perseus-block-math {
  padding: 0;
}
.framework-perseus:not(.perseus-article).perseus-mobile .perseus-label-image-widget-instructions .perseus-block-math .katex,
.framework-perseus:not(.perseus-article).perseus-mobile .perseus-label-image-widget-instructions .perseus-block-math mjx-container {
  font-size: initial !important;
  line-height: initial !important;
}
.perseus-label-image-widget-answer-choices .perseus-block-math > .perseus-block-math-inner,
.perseus-label-image-widget-instructions .perseus-block-math > .perseus-block-math-inner {
  overflow-x: hidden !important;
}
.perseus-widget-matcher {
  /* Ideally we'd get rid of this, as most of the styles have been moved
       to inline styles using Aphrodite, but this is a hacky "reach-in" into
       descendent widgets that we can't modify */
}
.perseus-widget-matcher div.paragraph {
  margin: 0;
}
.perseus-matrix .matrix-prefix,
.perseus-matrix .matrix-suffix {
  display: inline-block;
  margin: 10px 5px 0 10px;
  vertical-align: top;
}
.perseus-matrix .matrix-suffix {
  margin: 10px 10px 0 5px;
}
.perseus-matrix div.paragraph {
  margin: 0;
}
.perseus-matrix .matrix-input {
  background: #e2e2e2;
  display: inline-block;
  margin: 5px;
  padding: 3px;
  position: relative;
  width: auto;
}
.perseus-matrix .matrix-row {
  white-space: nowrap;
}
.perseus-matrix .matrix-bracket {
  border-color: #666;
  border-style: solid;
  border-bottom-width: 2px;
  border-top-width: 2px;
  margin-top: -2px;
  position: absolute;
  width: 6px;
}
.perseus-matrix .matrix-bracket.bracket-left {
  border-color: #666;
  border-left-width: 2px;
  border-right-width: 0;
  left: 3px;
}
.perseus-matrix .matrix-bracket.bracket-right {
  border-color: #666;
  border-left-width: 0;
  border-right-width: 2px;
  margin-left: -3px;
}
.perseus-matrix input,
.perseus-matrix .number-input {
  border: none;
  border-radius: 0;
  box-sizing: border-box;
  margin: 3px;
  padding: 0;
  text-align: center;
}
.perseus-matrix input.outside,
.perseus-matrix .number-input.outside {
  background: #f3f3f3;
}
.perseus-matrix input:focus,
.perseus-matrix .number-input:focus {
  border: none;
  outline: none;
}
.static-mode.perseus-matrix input,
.static-mode.perseus-matrix .number-input {
  background: #f5f5f5;
}
.perseus-matrix.the-matrix .matrix-bracket,
.perseus-matrix.the-matrix .matrix-left,
.perseus-matrix.the-matrix .matrix-right {
  border-color: #29f139;
}
.perseus-matrix.the-matrix .matrix-input {
  background: #222;
}
.perseus-matrix.the-matrix input,
.perseus-matrix.the-matrix .number-input {
  background: #666;
  color: #29f139;
  font-weight: bold;
}
.perseus-matrix.the-matrix input.outside,
.perseus-matrix.the-matrix .number-input.outside {
  background: #444;
}
body.mobile .perseus-matrix .matrix-input {
  display: table;
}
body.mobile .perseus-matrix .matrix-row {
  display: table-row;
}
body.mobile .perseus-matrix .matrix-input-field {
  display: table-cell;
}
body.mobile .perseus-matrix .math-output {
  margin: 4px 4px 2px 4px;
  max-height: 36px;
  max-width: 80px;
  overflow: hidden;
}
.perseus-matrix-editor .perseus-single-editor {
  width: 338px;
}
.perseus-widget-measurer {
  position: relative;
}
.perseus-widget-measurer img {
  position: absolute;
}
.perseus-widget-measurer-url {
  width: 70%;
}
#translations-dashboard .perseus-widget-measurer > .graphie {
  z-index: -1;
}
.orderer {
  position: relative;
}
.orderer.layout-horizontal .draggable-box {
  margin-left: 0;
  margin-top: 30px;
  padding: 13px;
}
.orderer .card {
  padding: 0 10px;
  cursor: pointer;
  position: relative;
  -webkit-user-select: none;
  user-select: none;
  width: auto;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.orderer.height-normal.layout-horizontal .card {
  height: 65px;
}
.orderer.height-normal.layout-vertical .card {
  padding: 5px;
}
.orderer.height-auto .card {
  padding: 0;
}
.orderer.height-auto.layout-horizontal .drag-hint {
  min-height: 65px;
  min-width: 22px;
}
.orderer.layout-horizontal .bank {
  padding: 0;
  margin: 0px 13px;
}
.orderer div.paragraph {
  margin: 0;
}
.orderer .card-wrap {
  position: relative;
  z-index: 3;
  width: auto;
}
.orderer.layout-horizontal .card-wrap {
  float: left;
}
.orderer.layout-horizontal .card-wrap:not(:first-child) {
  margin-left: 8px;
}
.orderer.layout-vertical .card-wrap {
  float: none;
  text-align: center;
}
.orderer.layout-vertical .card-wrap:not(:first-child) {
  margin-top: 8px;
}
.orderer.layout-vertical .bank,
.orderer.layout-vertical .draggable-box {
  box-sizing: border-box;
  float: left;
  max-width: 50%;
}
.orderer.layout-vertical .bank {
  padding: 11px 20px 11px 0;
  margin: 0;
}
.orderer.layout-vertical .draggable-box {
  margin-top: 0;
  padding: 10px;
  min-height: 170px;
}
.orderer.layout-vertical .draggable-box .drag-hint {
  box-sizing: border-box;
  min-width: 140px;
  min-height: 34px;
}
.orderer.layout-vertical .draggable-box .placeholder {
  box-sizing: border-box;
}
.framework-perseus.perseus-article .perseus-renderer .perseus-widget-passage-container .perseus-widget-passage,
.perseus-widget-passage-container .perseus-widget-passage {
  line-height: 20px;
  margin: 22px;
  position: relative;
}
.framework-perseus.perseus-article .perseus-renderer .perseus-widget-passage-container .perseus-widget-passage div.paragraph,
.perseus-widget-passage-container .perseus-widget-passage div.paragraph {
  font-family: KaTeX_Main, Times, "Times New Roman", serif;
}
.framework-perseus.perseus-article .perseus-renderer .perseus-widget-passage-container .perseus-widget-passage .passage-title div.paragraph,
.perseus-widget-passage-container .perseus-widget-passage .passage-title div.paragraph {
  font-family: "Noto Serif", serif;
  font-weight: 700;
  font-size: 20px;
  line-height: 22px;
  margin: 0 0 10px;
}
.framework-perseus.perseus-article .perseus-renderer .perseus-widget-passage-container .perseus-widget-passage > .passage-text div.paragraph,
.perseus-widget-passage-container .perseus-widget-passage > .passage-text div.paragraph {
  font-weight: 400;
  font-size: 16px;
  line-height: 20px;
  text-indent: 20px;
  margin: 0;
}
.framework-perseus.perseus-article .perseus-renderer .perseus-widget-passage-container .perseus-widget-passage > .passage-text div.paragraph span,
.perseus-widget-passage-container .perseus-widget-passage > .passage-text div.paragraph span {
  text-indent: 0;
}
.framework-perseus.perseus-article .perseus-renderer .perseus-widget-passage-container .perseus-widget-passage > .passage-text div.paragraph em,
.perseus-widget-passage-container .perseus-widget-passage > .passage-text div.paragraph em {
  line-height: 0;
}
.framework-perseus.perseus-article .perseus-renderer .perseus-widget-passage-container .katex,
.perseus-widget-passage-container .katex,
.framework-perseus.perseus-article .perseus-renderer .perseus-widget-passage-container mjx-container,
.perseus-widget-passage-container mjx-container {
  line-height: 18px;
}
.framework-perseus.perseus-article .perseus-renderer .perseus-widget-passage-container .footnotes,
.perseus-widget-passage-container .footnotes {
  margin-top: 22px;
}
.framework-perseus.perseus-article .perseus-renderer .perseus-widget-passage-container .footnotes div.paragraph,
.perseus-widget-passage-container .footnotes div.paragraph {
  font-size: 14px;
  margin: 0;
}
.framework-perseus.perseus-article .perseus-renderer .perseus-widget-passage-container .perseus-highlight,
.perseus-widget-passage-container .perseus-highlight {
  background-color: #fffabe;
}
.framework-perseus.perseus-article .perseus-renderer .perseus-widget-passage-container .perseus-review-highlight,
.perseus-widget-passage-container .perseus-review-highlight {
  background-color: #eee7b2;
}
.framework-perseus.perseus-article .perseus-renderer .perseus-widget-passage-container .perseus-passage-square-label,
.perseus-widget-passage-container .perseus-passage-square-label,
.framework-perseus.perseus-article .perseus-renderer .perseus-widget-passage-container .perseus-passage-circle-label,
.perseus-widget-passage-container .perseus-passage-circle-label,
.framework-perseus.perseus-article .perseus-renderer .perseus-widget-passage-container .perseus-passage-bracket-label,
.perseus-widget-passage-container .perseus-passage-bracket-label {
  font-family: Times, "Times New Roman", serif;
  font-size: 16px;
}
.framework-perseus.perseus-article .perseus-renderer .perseus-widget-passage-container .line-numbers,
.perseus-widget-passage-container .line-numbers {
  font-size: 12px;
  font-style: italic;
  font-weight: 600;
  position: absolute;
  text-align: right;
  max-height: 100%;
  overflow: hidden;
  padding-right: 6px;
  left: -52px;
  width: 37px;
}
.framework-perseus.perseus-article .perseus-renderer .perseus-widget-passage-container .line-numbers span,
.perseus-widget-passage-container .line-numbers span {
  display: block;
  line-height: 20px;
  position: relative;
  top: 2px;
  visibility: hidden;
}
.framework-perseus.perseus-article .perseus-renderer .perseus-widget-passage-container .line-numbers span:nth-of-type(5n),
.perseus-widget-passage-container .line-numbers span:nth-of-type(5n),
.framework-perseus.perseus-article .perseus-renderer .perseus-widget-passage-container .line-numbers .line-marker,
.perseus-widget-passage-container .line-numbers .line-marker {
  visibility: visible;
}
.perseus-widget-passage-editor .perseus-single-editor {
  font-family: Times, "Times New Roman", serif;
  margin-left: -11px;
}
.perseus-widget-passage-editor .perseus-textarea-pair textarea {
  font-size: 13px;
  line-height: 17px;
}
body.sat-section .perseus-widget-passage {
  margin-top: 0;
}
.perseus-widget-plotter svg,
.perseus-widget-plotter vml {
  position: absolute;
}
.perseus-widget-plotter span.rotate {
  transform: rotate(-90deg);
}
.set-from-scale-box {
  border: 2px solid #eeeeee;
  border-radius: 3px;
  padding: 3px;
}
.categories-title {
  font-size: 14px;
}
.perseus-mobile .perseus-widget-plotter {
  border: solid 0.5px #babec2;
  border-radius: 4px;
}
.perseus-mobile .perseus-widget-plotter .graphie-label .katex,
.perseus-mobile .perseus-widget-plotter .graphie-label mjx-container {
  color: #626569;
}
.perseus-widget-radio.perseus-rendered-radio div,
.perseus-widget-radio.perseus-rendered-radio div > p {
  /* TODO(alpert): Find a better way of doing inline renderers */
  display: inline;
}
.perseus-widget-radio.perseus-rendered-radio .perseus-radio-rationale-content > .perseus-renderer > .paragraph {
  display: table;
  margin: 0;
}
.perseus-widget-radio.perseus-rendered-radio .perseus-radio-rationale-content > .perseus-renderer > .paragraph:not(:last-child) {
  margin-bottom: 8px;
}
.perseus-widget-radio .unresponsive-svg-image div,
.perseus-widget-radio .svg-image div {
  display: block;
}
.perseus-widget-radio li div.instructions {
  margin-bottom: 5px;
}
.perseus-widget-radio li .value {
  display: block;
  margin-left: 18px;
  min-height: 22px;
}
.perseus-widget-radio li img,
.perseus-widget-radio li table {
  display: inline-block;
  vertical-align: middle;
}
.perseus-widget-radio li table {
  border: 1px solid #ccc;
}
.perseus-widget-radio-fieldset .instructions {
  font-family: "Lato", sans-serif;
}
.reaction {
  display: table-row;
}
.reaction-aligned {
  display: table-cell;
  vertical-align: middle;
}
.molecule-container {
  display: table-cell;
  vertical-align: middle;
  margin: 20px;
}
.molecule-canvas {
  display: table-cell;
  vertical-align: middle;
}
.arrow-container {
  display: table-cell;
  vertical-align: middle;
}
.above-text {
  font-size: 0.8em;
  margin-bottom: -1em;
  min-height: 1.8em;
  text-align: center;
}
.below-text {
  font-size: 0.8em;
  margin-top: -1.6em;
  min-height: 1.8em;
  text-align: center;
}
.framework-perseus .perseus-sequence {
  width: 100%;
}
.draggy-boxy-thing .draggable-box,
.draggy-boxy-thing .cards-area {
  background: #eee;
  border: 1px solid #ccc;
  border-bottom: 1px solid #aaa;
  box-shadow: 0 1px 2px #ccc;
}
.draggy-boxy-thing .cards-area {
  position: relative;
  z-index: 2;
}
.draggy-boxy-thing .card {
  position: relative;
  z-index: 3;
  background-color: #fff;
  border: 1px solid #b9b9b9;
  border-bottom-color: #939393;
  border-radius: 4px;
  cursor: pointer;
  touch-action: none;
}
.draggy-boxy-thing .card.placeholder {
  background: #ddd;
  border: 1px solid #ccc;
}
.draggy-boxy-thing .card.drag-hint {
  background: none;
  border: 1px dashed #aaa;
  cursor: auto;
}
.draggy-boxy-thing .card.drag-hint:hover {
  border-color: #aaa;
  box-shadow: none;
}
.draggy-boxy-thing .card.dragging {
  background-color: #ffedcd;
  opacity: 0.8;
  filter: opacity(0.8);
}
.draggy-boxy-thing .card.stack {
  z-index: auto;
}
.draggy-boxy-thing .card.stack:after {
  content: " ";
  background-color: #fff;
  border: 1px solid #b9b9b9;
  border-bottom-color: #939393;
  border-radius: 4px;
  height: 100%;
  width: 100%;
  z-index: -1;
  top: 1px;
  left: 1px;
  position: absolute;
}
.draggy-boxy-thing .card:hover {
  border-color: #ffa500;
  box-shadow: 0 0 4px #c78100;
}
.perseus-sortable div.paragraph {
  margin: 0;
}
.perseus-sortable .perseus-sortable-draggable:before {
  content: "";
  display: inline-block;
  height: 100%;
  vertical-align: middle;
}
.perseus-sortable .perseus-sortable-draggable > div {
  display: inline-block;
  font-size: 14px;
  max-width: 100%;
  vertical-align: middle;
}
.perseus-sortable .perseus-sortable-draggable-unpadded img {
  vertical-align: bottom;
}
.framework-perseus table.perseus-widget-table-of-values.non-markdown {
  text-align: left;
  margin: 20px auto;
  border-collapse: collapse;
}
.framework-perseus table.perseus-widget-table-of-values.non-markdown tr {
  height: 23px;
}
.framework-perseus table.perseus-widget-table-of-values.non-markdown th,
.framework-perseus table.perseus-widget-table-of-values.non-markdown td {
  border: 2px solid black;
  border-width: 0 2px;
}
.framework-perseus table.perseus-widget-table-of-values.non-markdown th:first-child,
.framework-perseus table.perseus-widget-table-of-values.non-markdown td:first-child {
  border-left: 0;
}
.framework-perseus table.perseus-widget-table-of-values.non-markdown th:last-child,
.framework-perseus table.perseus-widget-table-of-values.non-markdown td:last-child {
  border-right: 0;
}
.framework-perseus table.perseus-widget-table-of-values.non-markdown th {
  font-weight: normal;
  padding: 5px;
  width: 80px;
  text-align: left;
  border-bottom: 2px solid black;
}
.framework-perseus table.perseus-widget-table-of-values.non-markdown th .paragraph {
  margin: 0;
}
.framework-perseus table.perseus-widget-table-of-values.non-markdown td {
  padding: 0px 5px;
}
.framework-perseus table.perseus-widget-table-of-values.non-markdown tbody tr:first-child td {
  padding-top: 5px;
}
.framework-perseus table.perseus-widget-table-of-values input,
#answer_area table.perseus-widget-table-of-values input {
  width: 80px;
}
body.mobile .framework-perseus table.perseus-widget-table-of-values.non-markdown td {
  padding: 5px;
}
.perseus-widget-transformer .highlighted-tool-button {
  text-shadow: 1px 1px rgba(0, 0, 0, 0.25);
}
.perseus-widget-transformer > .graphie-container {
  margin-bottom: 10px;
  position: relative;
  overflow: hidden;
}
.perseus-widget-transformer > .graphie-container > img,
.perseus-widget-transformer > .graphie-container > .unresponsive-svg-image {
  position: absolute;
  bottom: 0;
  left: 0;
}
.perseus-widget-transformer .transformer-undo-button {
  float: right;
}
.perseus-widget-transformer .perseus-transformation-list {
  margin-top: 10px;
  margin-bottom: 10px;
}
.perseus-widget-transformer .perseus-transformation-list input {
  width: 40px;
}
.old-unit-input input,
.unit-editor-canonical {
  border: 1px solid #a4a4a4;
  border-radius: 5px;
  font-size: 14px;
  padding: 6px;
}
.unit-editor > div {
  margin: 5px 0;
}
.perseus-widget-container.widget-nohighlight {
  transition: all 0.15s;
}
.perseus-widget-container.widget-highlight {
  box-shadow: 0px 0px 0px 2px #ffa500;
  transition: all 0.15s;
}
.perseus-widget-container.widget-inline {
  display: inline;
}
.perseus-widget-container.widget-inline-block {
  display: inline-block;
}
.bibliotron-exercise .perseus-hint-renderer {
  border-left: 4px solid #f6f7f7;
  padding-left: 16px;
  position: relative;
}
.bibliotron-exercise .perseus-hint-renderer:focus {
  border-left-color: #d6d8da;
  outline: none;
}
.bibliotron-exercise .perseus-hint-renderer:before,
.bibliotron-exercise .perseus-hint-renderer:after {
  content: "";
  display: table;
  clear: both;
}
.bibliotron-exercise .perseus-hint-renderer div.paragraph {
  margin-top: 0px;
  margin-bottom: 16px;
}
.bibliotron-exercise .perseus-hint-renderer.last-hint {
  margin-bottom: 32px;
}
@media (max-width: 767px) {
  .bibliotron-exercise .perseus-hint-renderer.last-hint {
    margin-bottom: 0;
  }
}
.perseus-hint-label {
  color: #00457c;
  display: none;
  font-weight: 600;
  margin-right: 13px;
  position: absolute;
  right: 100%;
  white-space: nowrap;
}
.perseus-domain-science .perseus-hint-label {
  color: #9e034e;
}
.perseus-domain-math .perseus-hint-label {
  color: #007d96;
}
.perseus-domain-economics .perseus-hint-label {
  color: #a75a05;
}
.perseus-domain-partner .perseus-hint-label {
  color: #208170;
}
.perseus-domain-humanities .perseus-hint-label {
  color: #be2612;
}
.perseus-domain-test-prep .perseus-hint-label {
  color: #543b78;
}
.perseus-domain-cs .perseus-hint-label {
  color: #0d923f;
}
.bibliotron-exercise .perseus-hint-renderer.last-rendered .perseus-hint-label {
  display: block;
}
@media (max-width: 767px) {
  .bibliotron-exercise .perseus-hint-renderer.last-rendered .perseus-hint-label {
    display: none;
  }
}
.perseus-tooltip {
  background: #fff;
  padding: 5px 10px;
  width: 240px;
}
.perseus-formats-tooltip {
  background: #fff;
  padding: 5px 10px;
  width: 240px;
  color: #777;
}
.framework-perseus .perseus-formats-tooltip .paragraph > ul {
  padding: 0;
  margin: -20px 0 -16px 0;
}
.framework-perseus .perseus-formats-tooltip .paragraph > ul > li {
  list-style-type: none;
}
.perseus-math-input.mq-editable-field.mq-math-mode {
  background-color: transparent;
  font-size: 18px;
  min-width: 100px;
  border: unset;
}
.perseus-math-input.mq-editable-field.mq-math-mode.mq-focused {
  box-shadow: unset;
}
.perseus-math-input.mq-editable-field.mq-math-mode > .mq-root-block {
  padding: 4px;
}
.perseus-math-input.mq-editable-field.mq-math-mode .mq-cursor {
  padding-left: 0;
}
.perseus-math-input.mq-editable-field.mq-math-mode .mq-paren.mq-ghost {
  color: inherit;
}
.perseus-math-input.mq-editable-field.mq-math-mode .mq-paren + span {
  margin: 0;
}
.perseus-math-input.mq-editable-field.mq-math-mode .mq-binary-operator {
  font-family: KaTeX_Main !important;
}
.perseus-math-input.mq-editable-field.mq-math-mode sup {
  line-height: normal;
}
.perseus-widget-editor .perseus-math-input.mq-editable-field.mq-math-mode > .mq-root-block {
  border-radius: 0;
}
.math-input-buttons {
  background-color: rgba(255, 255, 255, 0.7);
  border-radius: 5px;
  border: 1px solid #ddd;
  box-sizing: border-box;
  margin-top: 5px;
  padding: 2px;
  width: 201px;
}
.math-input-buttons.absolute {
  left: -2px;
  position: absolute;
  top: -3px;
  z-index: 5;
}
.tex-button {
  display: block;
  float: left;
  width: 35px;
  height: 35px;
  margin: 2px;
  border: 1px solid #1c758a;
  background-color: white;
  border-radius: 5px;
}
.tex-button:hover {
  cursor: pointer;
  background-color: #f0f0f0;
}
.tex-button:focus {
  border: 2px solid #1c758a;
  outline: none;
}
.tex-button-row {
  margin: 5px 0;
}
.tex-button-row:first-child {
  margin-top: 0;
}
.tex-button-row:last-child {
  margin-bottom: 0;
}
.renderer-widget-error {
  background-color: #fcc;
}
.perseus-error {
  background: #cf5044;
  border: 2px solid red;
  border-radius: 5px;
  padding: 20px;
  margin: 15px 0 10px;
}
@media (max-width: 767px) {
  .perseus-renderer-responsive {
    margin: 0 16px;
  }
  .perseus-renderer-responsive .perseus-renderer-responsive {
    margin: 0;
  }
}
@media (max-width: 767px) {
  .perseus-mobile .perseus-block-math {
    font-size: 18px;
  }
}
.keypad-input {
  outline: none !important;
}
.keypad-input .mq-editable-field .mq-root-block {
  overflow-x: auto;
}
.keypad-input .mq-editable-field .mq-cursor:not(:only-child),
.keypad-input .mq-editable-field .mq-root-block.mq-hasCursor > .mq-cursor:only-child {
  /* HACK(charlie): Magic numbers to properly size and position the vertical
               cursor, which is visible whenever the cursor is not alone in its parent,
               with the exception that it's also visible when the entire input is
               empty. */
  height: 20px !important;
  width: 2px;
  margin-top: -5px !important;
  vertical-align: middle !important;
  border-radius: 1px !important;
}
.keypad-input .mq-editable-field .mq-cursor {
  border-left: 2px solid #1865f2 !important;
  margin-left: -1px !important;
  margin-right: -1px !important;
  opacity: 1 !important;
  transition: opacity 300ms ease !important;
  visibility: visible !important;
}
.keypad-input .mq-editable-field .mq-cursor.mq-blink {
  opacity: 0 !important;
  visibility: visible !important;
}
.keypad-input .mq-editable-field .mq-non-leaf .mq-cursor:only-child {
  border: 2px solid !important;
  border-color: #1865f2 !important;
  border-radius: 1px;
  opacity: 1 !important;
  padding: 0 4px 0 4px;
  transition: border-color 300ms ease !important;
}
.keypad-input .mq-editable-field .mq-non-leaf .mq-cursor:only-child.mq-blink {
  border-color: #1865f2 !important;
  opacity: 1 !important;
}
.keypad-input .mq-empty {
  background: transparent !important;
}
.keypad-input .mq-empty:not(.mq-root-block):after,
.keypad-input .mq-hasCursor:empty:not(.mq-root-block):after {
  border: 2px solid rgba(33, 36, 44, 0.16);
  border-radius: 1px;
  color: transparent;
  display: inline-block;
  margin-left: -1px;
  margin-right: -1px;
  padding: 0 4px 0 4px;
  visibility: visible !important;
}
.keypad-input .mq-selection .mq-empty:not(.mq-root-block):after {
  border-color: white;
}
.keypad-input .mq-hasCursor:empty:not(.mq-root-block):after {
  content: "c";
}
.keypad-input .mq-math-mode .mq-selection .mq-non-leaf,
.keypad-input .mq-editable-field .mq-selection .mq-non-leaf {
  background: #1865f2 !important;
  border-color: white !important;
  color: white !important;
}
.keypad-input .mq-math-mode .mq-selection .mq-scaled,
.keypad-input .mq-editable-field .mq-selection .mq-scaled {
  background: transparent !important;
  border-color: transparent !important;
  color: white !important;
}
.keypad-input .mq-selection {
  background: #1865f2 !important;
  border-color: white !important;
  color: white !important;
  display: inline-block !important;
}
/*
 * MathQuill v0.10.1               http://mathquill.com
 * by Han, Jeanine, and Mary  maintainers@mathquill.com
 *
 * This Source Code Form is subject to the terms of the
 * Mozilla Public License, v. 2.0. If a copy of the MPL
 * was not distributed with this file, You can obtain
 * one at http://mozilla.org/MPL/2.0/.
 */
@font-face {
  font-family: Symbola;
  src: url(/fonts/Symbola.eot);
  src: local("Symbola Regular"), local("Symbola"), url(https://cdn.kastatic.org/genwebpack/prod/en/fonts/52e7ce77729712a06423-Symbola.woff2) format("woff2"), url(https://cdn.kastatic.org/genwebpack/prod/en/fonts/c2f28720e1e7cecfecd4-Symbola.woff) format("woff"), url(https://cdn.kastatic.org/genwebpack/prod/en/fonts/9ab231eefb8c56f6ef5d-Symbola.ttf) format("truetype"), url(https://cdn.kastatic.org/genwebpack/prod/en/fonts/b0c85dd4bda9eef9f78a-Symbola.otf) format("opentype"), url(/fonts/Symbola.svg#Symbola) format("svg");
}
.mq-editable-field {
  display: -moz-inline-box;
  display: inline-block;
}
.mq-editable-field .mq-cursor {
  border-left: 1px solid black;
  margin-left: -1px;
  position: relative;
  z-index: 1;
  padding: 0;
  display: -moz-inline-box;
  display: inline-block;
}
.mq-editable-field .mq-cursor.mq-blink {
  visibility: hidden;
}
.mq-editable-field,
.mq-math-mode .mq-editable-field {
  border: 1px solid gray;
}
.mq-editable-field.mq-focused,
.mq-math-mode .mq-editable-field.mq-focused {
  -webkit-box-shadow: #8bd 0 0 1px 2px, inset #6ae 0 0 2px 0;
  -moz-box-shadow: #8bd 0 0 1px 2px, inset #6ae 0 0 2px 0;
  box-shadow: #8bd 0 0 1px 2px, inset #6ae 0 0 2px 0;
  border-color: #709AC0;
  border-radius: 1px;
}
.mq-math-mode .mq-editable-field {
  margin: 1px;
}
.mq-editable-field .mq-latex-command-input {
  color: inherit;
  font-family: "Courier New", monospace;
  border: 1px solid gray;
  padding-right: 1px;
  margin-right: 1px;
  margin-left: 2px;
}
.mq-editable-field .mq-latex-command-input.mq-empty {
  background: transparent;
}
.mq-editable-field .mq-latex-command-input.mq-hasCursor {
  border-color: ActiveBorder;
}
.mq-editable-field.mq-empty:after,
.mq-editable-field.mq-text-mode:after,
.mq-math-mode .mq-empty:after {
  visibility: hidden;
  content: 'c';
}
.mq-editable-field .mq-cursor:only-child:after,
.mq-editable-field .mq-textarea + .mq-cursor:last-child:after {
  visibility: hidden;
  content: 'c';
}
.mq-editable-field .mq-text-mode .mq-cursor:only-child:after {
  content: '';
}
.mq-editable-field.mq-text-mode {
  overflow-x: auto;
  overflow-y: hidden;
}
.mq-root-block,
.mq-math-mode .mq-root-block {
  display: -moz-inline-box;
  display: inline-block;
  width: 100%;
  padding: 2px;
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
  white-space: nowrap;
  overflow: hidden;
  vertical-align: middle;
}
.mq-math-mode {
  font-variant: normal;
  font-weight: normal;
  font-style: normal;
  font-size: 115%;
  line-height: 1;
  display: -moz-inline-box;
  display: inline-block;
}
.mq-math-mode .mq-non-leaf,
.mq-math-mode .mq-scaled {
  display: -moz-inline-box;
  display: inline-block;
}
.mq-math-mode var,
.mq-math-mode .mq-text-mode,
.mq-math-mode .mq-nonSymbola {
  font-family: "Times New Roman", Symbola, serif;
  line-height: .9;
}
.mq-math-mode * {
  font-size: inherit;
  line-height: inherit;
  margin: 0;
  padding: 0;
  border-color: black;
  -webkit-user-select: none;
  -moz-user-select: none;
  user-select: none;
  box-sizing: border-box;
}
.mq-math-mode .mq-empty {
  background: #ccc;
}
.mq-math-mode .mq-empty.mq-root-block {
  background: transparent;
}
.mq-math-mode.mq-empty {
  background: transparent;
}
.mq-math-mode .mq-text-mode {
  display: inline-block;
}
.mq-math-mode .mq-text-mode.mq-hasCursor {
  box-shadow: inset darkgray 0 .1em .2em;
  padding: 0 .1em;
  margin: 0 -0.1em;
  min-width: 1ex;
}
.mq-math-mode .mq-font {
  font: 1em "Times New Roman", Symbola, serif;
}
.mq-math-mode .mq-font * {
  font-family: inherit;
  font-style: inherit;
}
.mq-math-mode b,
.mq-math-mode b.mq-font {
  font-weight: bolder;
}
.mq-math-mode var,
.mq-math-mode i,
.mq-math-mode i.mq-font {
  font-style: italic;
}
.mq-math-mode var.mq-f {
  margin-right: 0.2em;
  margin-left: 0.1em;
}
.mq-math-mode .mq-roman var.mq-f {
  margin: 0;
}
.mq-math-mode big {
  font-size: 200%;
}
.mq-math-mode .mq-roman {
  font-style: normal;
}
.mq-math-mode .mq-sans-serif {
  font-family: sans-serif, Symbola, serif;
}
.mq-math-mode .mq-monospace {
  font-family: monospace, Symbola, serif;
}
.mq-math-mode .mq-overline {
  border-top: 1px solid black;
  margin-top: 1px;
}
.mq-math-mode .mq-underline {
  border-bottom: 1px solid black;
  margin-bottom: 1px;
}
.mq-math-mode .mq-binary-operator {
  padding: 0 0.2em;
  display: -moz-inline-box;
  display: inline-block;
}
.mq-math-mode .mq-supsub {
  text-align: left;
  font-size: 90%;
  vertical-align: -0.5em;
}
.mq-math-mode .mq-supsub.mq-limit {
  font-size: 80%;
  vertical-align: -0.4em;
}
.mq-math-mode .mq-supsub.mq-sup-only {
  vertical-align: .5em;
}
.mq-math-mode .mq-supsub.mq-sup-only .mq-sup {
  display: inline-block;
  vertical-align: text-bottom;
}
.mq-math-mode .mq-supsub .mq-sup {
  display: block;
}
.mq-math-mode .mq-supsub .mq-sub {
  display: block;
  float: left;
}
.mq-math-mode .mq-supsub.mq-limit .mq-sub {
  margin-left: -0.25em;
}
.mq-math-mode .mq-supsub .mq-binary-operator {
  padding: 0 .1em;
}
.mq-math-mode .mq-supsub .mq-fraction {
  font-size: 70%;
}
.mq-math-mode sup.mq-nthroot {
  font-size: 80%;
  vertical-align: 0.8em;
  margin-right: -0.6em;
  margin-left: .2em;
  min-width: .5em;
}
.mq-math-mode .mq-paren {
  padding: 0 .1em;
  vertical-align: top;
  -webkit-transform-origin: center .06em;
  -moz-transform-origin: center .06em;
  -ms-transform-origin: center .06em;
  -o-transform-origin: center .06em;
  transform-origin: center .06em;
}
.mq-math-mode .mq-paren.mq-ghost {
  color: silver;
}
.mq-math-mode .mq-paren + span {
  margin-top: .1em;
  margin-bottom: .1em;
}
.mq-math-mode .mq-array {
  vertical-align: middle;
  text-align: center;
}
.mq-math-mode .mq-array > span {
  display: block;
}
.mq-math-mode .mq-operator-name {
  font-family: Symbola, "Times New Roman", serif;
  line-height: .9;
  font-style: normal;
}
.mq-math-mode var.mq-operator-name.mq-first {
  padding-left: .2em;
}
.mq-math-mode var.mq-operator-name.mq-last,
.mq-math-mode .mq-supsub.mq-after-operator-name {
  padding-right: .2em;
}
.mq-math-mode .mq-fraction {
  font-size: 90%;
  text-align: center;
  vertical-align: -0.4em;
  padding: 0 .2em;
}
.mq-math-mode .mq-fraction,
.mq-math-mode .mq-large-operator,
.mq-math-mode x:-moz-any-link {
  display: -moz-groupbox;
}
.mq-math-mode .mq-fraction,
.mq-math-mode .mq-large-operator,
.mq-math-mode x:-moz-any-link,
.mq-math-mode x:default {
  display: inline-block;
}
.mq-math-mode .mq-numerator,
.mq-math-mode .mq-denominator {
  display: block;
}
.mq-math-mode .mq-numerator {
  padding: 0 0.1em;
}
.mq-math-mode .mq-denominator {
  border-top: 1px solid;
  float: right;
  width: 100%;
  padding: 0.1em;
}
.mq-math-mode .mq-sqrt-prefix {
  padding-top: 0;
  position: relative;
  top: 0.1em;
  vertical-align: top;
  -webkit-transform-origin: top;
  -moz-transform-origin: top;
  -ms-transform-origin: top;
  -o-transform-origin: top;
  transform-origin: top;
}
.mq-math-mode .mq-sqrt-stem {
  border-top: 1px solid;
  margin-top: 1px;
  padding-left: .15em;
  padding-right: .2em;
  margin-right: .1em;
  padding-top: 1px;
}
.mq-math-mode .mq-vector-prefix {
  display: block;
  text-align: center;
  line-height: .25em;
  margin-bottom: -0.1em;
  font-size: 0.75em;
}
.mq-math-mode .mq-vector-stem {
  display: block;
}
.mq-math-mode .mq-large-operator {
  vertical-align: -0.2em;
  padding: .2em;
  text-align: center;
}
.mq-math-mode .mq-large-operator .mq-from,
.mq-math-mode .mq-large-operator big,
.mq-math-mode .mq-large-operator .mq-to {
  display: block;
}
.mq-math-mode .mq-large-operator .mq-from,
.mq-math-mode .mq-large-operator .mq-to {
  font-size: 80%;
}
.mq-math-mode .mq-large-operator .mq-from {
  float: right;
  /* take out of normal flow to manipulate baseline */
  width: 100%;
}
.mq-math-mode,
.mq-math-mode .mq-editable-field {
  cursor: text;
  font-family: Symbola, "Times New Roman", serif;
}
.mq-math-mode .mq-overarrow {
  border-top: 1px solid black;
  margin-top: 1px;
  padding-top: 0.2em;
}
.mq-math-mode .mq-overarrow:before {
  display: block;
  position: relative;
  top: -0.34em;
  font-size: 0.5em;
  line-height: 0em;
  content: '\27A4';
  text-align: right;
}
.mq-math-mode .mq-overarrow.mq-arrow-left:before {
  -moz-transform: scaleX(-1);
  -o-transform: scaleX(-1);
  -webkit-transform: scaleX(-1);
  transform: scaleX(-1);
  filter: FlipH;
  -ms-filter: "FlipH";
}
.mq-math-mode .mq-selection,
.mq-editable-field .mq-selection,
.mq-math-mode .mq-selection .mq-non-leaf,
.mq-editable-field .mq-selection .mq-non-leaf,
.mq-math-mode .mq-selection .mq-scaled,
.mq-editable-field .mq-selection .mq-scaled {
  background: #B4D5FE !important;
  background: Highlight !important;
  color: HighlightText;
  border-color: HighlightText;
}
.mq-math-mode .mq-selection .mq-matrixed,
.mq-editable-field .mq-selection .mq-matrixed {
  background: #39F !important;
}
.mq-math-mode .mq-selection .mq-matrixed-container,
.mq-editable-field .mq-selection .mq-matrixed-container {
  filter: progid:DXImageTransform.Microsoft.Chroma(color='#3399FF') !important;
}
.mq-math-mode .mq-selection.mq-blur,
.mq-editable-field .mq-selection.mq-blur,
.mq-math-mode .mq-selection.mq-blur .mq-non-leaf,
.mq-editable-field .mq-selection.mq-blur .mq-non-leaf,
.mq-math-mode .mq-selection.mq-blur .mq-scaled,
.mq-editable-field .mq-selection.mq-blur .mq-scaled,
.mq-math-mode .mq-selection.mq-blur .mq-matrixed,
.mq-editable-field .mq-selection.mq-blur .mq-matrixed {
  background: #D4D4D4 !important;
  color: black;
  border-color: black;
}
.mq-math-mode .mq-selection.mq-blur .mq-matrixed-container,
.mq-editable-field .mq-selection.mq-blur .mq-matrixed-container {
  filter: progid:DXImageTransform.Microsoft.Chroma(color='#D4D4D4') !important;
}
.mq-editable-field .mq-textarea,
.mq-math-mode .mq-textarea {
  position: relative;
  -webkit-user-select: text;
  -moz-user-select: text;
  user-select: text;
}
.mq-editable-field .mq-textarea *,
.mq-math-mode .mq-textarea *,
.mq-editable-field .mq-selectable,
.mq-math-mode .mq-selectable {
  -webkit-user-select: text;
  -moz-user-select: text;
  user-select: text;
  position: absolute;
  clip: rect(1em 1em 1em 1em);
  -webkit-transform: scale(0);
  -moz-transform: scale(0);
  -ms-transform: scale(0);
  -o-transform: scale(0);
  transform: scale(0);
  resize: none;
  width: 1px;
  height: 1px;
}
.mq-math-mode .mq-matrixed {
  background: white;
  display: -moz-inline-box;
  display: inline-block;
}
.mq-math-mode .mq-matrixed-container {
  filter: progid:DXImageTransform.Microsoft.Chroma(color='white');
  margin-top: -0.1em;
}