/* fonts */

@font-face {
    font-family: 'Miriam Libre';
    src: url('fonts/miriamlibre-bold.woff2') format('woff2'), url('fonts/miriamlibre-bold.woff') format('woff');
    font-weight: bold;
    font-style: normal;
}
*,
*::before,
*::after {
    font-family: inherit;
    color: inherit;
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
html {
    font-size: calc(1em + 0.33vw);
    font-family: PT Sans, sans-serif;
    line-height: 1.5;
    color: #111;
}
* + * {
    margin-top: 2.25rem;
}
br,
dt,
dd,
th,
td,
option,
[hidden] + *,
li + li,
body,
.main-and-footer {
    margin-top: 0;
}
p + p {
    margin-top: 0.75rem;
}
a {
    text-decoration: none;
    border-bottom: 1px solid;
}
abbr {
    text-decoration: none;
    cursor: help;
    border-bottom: 1px dashed;
}
img {
    max-width: 100%;
}
p img {
    margin: 0.75rem 0;
}
figure p img {
    margin: 0;
}
:focus:not([tabindex="-1"]),
[data-expands]:focus svg,
.patterns a:focus .text {
    outline: 3px solid #ccc;
    outline-offset: 2px;
}
/* fix for IE :( */

[tabindex="-1"]:focus,
div:not([tabindex]):focus {
    outline: none;
}
/* skip link */

[href="#main"] {
    display: block;
    width: 100%;
    padding: 0.75rem;
    color: #fff;
    background: #000;
    position: absolute;
    top: -3rem;
    text-align: center;
    z-index: 1;
}
[href="#main"]:focus {
    top: 0;
    outline: none;
}
/* text styles */

h1,
h2,
h3,
h4 {
    font-family: Miriam Libre, serif;
    line-height: 1.125;
}
h1 {
    font-size: 2rem;
}
h2 {
    font-size: 1.66rem;
}
h3 {
    font-size: 1.25rem;
}
h4,
h5 {
    font-size: 1rem;
    font-family: PT Sans, sans-serif;
}
h5 {
    font-size: 0.85rem;
    text-transform: uppercase;
}
kbd {
    line-height: 1;
    font-size: 0.66rem;
    padding: 0.1rem 0.33rem;
    border-radius: 0.25rem;
    border: 2px solid;
    box-shadow: 0.125rem 0.125rem 0 #111;
    vertical-align: 0.33em;
}
pre,
.file-tree {
    overflow-x: auto;
    padding: 1.5rem;
    border: 1px solid;
}
code {
    font-family: Consolas, Monaco, 'Andale Mono', 'Ubuntu Mono', monospace;
    font-size: 0.85em;
}
.cmd {
    padding: 0.75rem;
    background: #111;
}
.cmd code {
    color: #fff;
    white-space: nowrap;
}
.cmd code::before {
    content: '$';
    font-weight: bold;
    padding-right: 0.25em;
}
/* Lists */

main ul,
main ol {
    margin-left: 2.25rem;
}
main li + li {
    margin-top: 0.5rem;
}
main ul ul {
    margin-top: 0;
}
/* Buttons */

button {
    font-size: 1.25rem;
    font-family: inherit;
    font-weight: inherit;
    background: #111;
    color: #fff;
    padding: 0.75rem;
    border: 0;
}
/* Tables */

table {
    text-align: left;
    table-layout: fixed;
    width: 100%;
    border-collapse: collapse;
}
th,
td {
    border: 2px solid;
    padding: 0.5rem;
    line-height: 1.25;
    margin: 0;
}
th {
    font-weight: bold;
}
th:empty {
    border: 0;
}
/* Tested using... table */

.tested {
    text-align: center;
}
.tested td {
    vertical-align: top;
    overflow: hidden;
}
.tested th {
    background-color: #111;
    border-color: #111;
    color: #fff;
}
.tested img {
    max-width: 3rem;
}
.tested span {
    display: block;
    margin: 0;
}
.tested .additional {
    font-size: 0.85rem;
}
caption {
    font-size: 1.125rem;
    padding-bottom: 0.25rem;
    font-style: italic;
}
/* Page structure */

.wrapper {
    position: relative;
    margin-top: 0;
    overflow-x: hidden;
}
.intro-and-nav {
    font-size: 0.85rem;
    width: 15rem;
    height: 100vh;
    position: fixed;
    top: 0;
    left: 0;
    border-right: 2px solid;
}
.intro-and-nav > div {
    padding: 2.25rem;
    display: flex;
    flex-direction: column;
    height: 100%;
}
.logo {
    border: 0;
}
.logo img {
    width: 100%;
    max-width: 12rem;
}
.library-desc {
    font-style: italic;
    margin-top: 0.5rem;
    margin-left: auto;
    margin-right: auto;
    max-width: 30rem;
}
.main-and-footer {
    margin-left: 15rem;
}
.main-and-footer > div {
    max-width: 40rem;
    margin: 0 auto;
    padding: 2.25rem;
}
[role="contentinfo"] {
    font-size: 0.85rem;
    margin-top: 4rem;
    text-align: center;
}
/* Patterns navigation */

.patterns {
    overflow: auto;
    margin-top: 1.5rem;
}
.patterns * {
    margin-top: 0;
}
.patterns h3 {
    font-size: 1rem;
}
.patterns h3 + ul {
    margin-top: 0.75rem;
}
.patterns li {
    line-height: 1.125;
    list-style: none;
}
.patterns li + li {
    margin-top: 0.75rem;
}
.patterns ul ul {
    margin-left: 0.75rem;
}
.pattern a {
    border: 0;
    display: flex;
    flex-wrap: nowrap;
    align-items: baseline;
    font-weight: bold;
}
.pattern a:focus {
    outline: none;
}
.pattern span {
    margin-left: 0.125rem;
}
.pattern [aria-current] {
    background-color: #111;
    background-image: url(images/arrow_effect.svg);
    background-position: right center;
    background-size: 125%;
    background-repeat: no-repeat;
    color: #fff;
    padding: 0.5em 1em 0.5em;
}
/* menu button */

#menu-button {
    display: none;
    width: 100%;
    text-align: center;
}
#menu-button:focus {
    outline: none;
    box-shadow: inset 0 0 0 0.25rem #ccc;
}
/* Tables of contents */

.toc {
    font-size: 0.85rem;
    border: 1px solid;
    padding: 1.5rem;
}
.toc h2 {
    font-size: 1rem;
}
.toc ol {
    margin-left: 0.75rem;
    margin-top: 0.5rem;
}
/* Pattern lists */

.patterns-list {
    list-style: none;
    margin-left: 0;
}
.patterns-list h2 {
    font-size: 1.25rem;
}
.patterns-list li + li {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 2px solid;
}
.patterns-list a {
    border: 0;
}
/* Tags */

.tags {
    margin-top: 0;
    font-size: 0.85rem;
}
.tags * {
    display: inline;
    margin: 0;
}
.tags strong {
    margin-right: 0.25rem;
}
.tags li {
    white-space: nowrap;
    margin: 0 0.25rem 0 0;
}
/* Notes and warnings */

.note {
    border-left: 0.5rem solid;
    font-size: 0.85rem;
}
.note svg {
    height: 2.25rem;
    width: auto;
}
.note > div {
    margin-left: 0.75rem;
}
.note > div > img:first-child {
    height: 1.5rem;
}
.note > div >:first-child + * {
    margin-top: 0;
}
.note.warning {
    border-left: 0;
    background-image: url(images/stripe.svg);
    background-size: 0.5rem auto;
    background-repeat: repeat-y;
}
.note.warning > div {
    margin-left: 1.25rem;
}
/* Tick lists */

.ticks li {
    list-style: none;
    position: relative;
}
.ticks li::before {
    content: '';
    display: inline-block;
    width: 1rem;
    height: 1rem;
    margin-right: 0.25rem;
    background-image: url(images/icon-tick.svg);
    background-size: 100% auto;
    position: absolute;
    left: -1.25rem;
    top: 0.25rem;
}
/* Figures */

figure {
    text-align: center;
}
figcaption {
    font-size: 0.85rem;
    font-style: italic;
    margin-top: 0.5rem;
}
main {
    display: block;
    counter-reset: fig;
    min-height: 100vh;
    overflow: hidden;
}
figcaption::before {
    counter-increment: fig;
    content: 'Figure ' counter(fig) ':\0020';
    font-weight: bold;
}
/* Code blocks */

pre[class*=language-] {
    background: none;
    margin-top: 2.25rem;
    margin-bottom: 0;
    overflow-y: hidden;
    overflow-x: auto;
}
pre[class*=language-][data-line] {
    padding: 1em 0 0 2.25rem;
}
pre[class*=language-] code * {
    margin-top: 0 !important;
}
[data-codeblock-shortcode] {
    display: block;
    margin-top: -1rem;
}
.token.property,
.token.tag,
.token.boolean,
.token.number,
.token.constant,
.token.symbol,
.token.deleted {
    color: #888;
}
.token.selector,
.token.attr-name,
.token.string,
.token.char,
.token.builtin,
.token.inserted {
    color: #111;
}
.token.operator,
.token.entity,
.token.url,
.language-css .token.string,
.style .token.string {
    color: #333;
    background: none;
}
.token.atrule,
.token.attr-value,
.token.keyword {
    color: #666;
}
.token.function {
    color: #888;
}
.line-numbers code {
    padding-left: 3rem;
    margin-top: -1rem;
    overflow-x: auto;
    overflow-y: hidden;
}
.line-numbers {
    padding: 1.5rem !important;
}
.line-numbers .line-numbers-rows {
    margin-left: 2.25rem;
    left: -3.5em;
    top: 1.25rem;
    color: #111;
    border-color: #111;
}
.line-numbers-rows > span:before {
    color: inherit;
}
/* file tree lists */

.file-tree {
    overflow-x: auto;
}
.file-tree ul {
    font-family: Courier, monospace;
    margin: 0;
    padding: 0;
    padding-left: 3rem;
    list-style: none;
    line-height: 1.25;
    position: relative;
}
.file-tree > ul {
    padding-left: 0;
    overflow-x: auto;
    overflow-y: hidden;
}
.file-tree li {
    background: #fff;
    position: relative;
    white-space: nowrap;
}
.file-tree li + li {
    margin-top: 0;
}
.file-tree li:not(:last-child) > ul::before {
    content: '\2502\0020\2502\0020\2502\0020\2502\0020\2502\0020\2502\0020\2502\0020\2502\0020\2502\0020\2502\0020\2502\0020\2502\0020\2502\0020\2502\0020\2502\0020\2502\0020\2502\0020\2502\0020\2502\0020\2502\0020\2502\0020\2502\0020\2502\0020\2502\0020\2502\0020\2502\0020\2502\0020\2502\0020\2502\0020\2502\0020\2502\0020\2502\0020\2502\0020\2502\0020\2502\0020\2502\0020\2502\0020\2502\0020\2502\0020\2502\0020';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 1em;
    white-space: normal;
}
.file-tree li::before {
    content: '\251C\2500\2500\0020';
}
.file-tree li:last-child::before {
    content: '\2514\2500\2500\0020';
}
/* Expandable sections */

.expandable-section {
    border-top: 1px solid;
    border-bottom: 1px solid;
    padding: 0.75rem 0;
}
[id^="js-expandable-"] {
    margin: 0;
    padding: 1.5rem 0 0.75rem;
}
@media screen {
    .expandable-section + .expandable-section {
        margin-top: 0;
        border-top: 0;
    }
}
[data-expands] {
    text-align: left;
    color: #111;
    border: 0;
    background: none;
    width: 100%;
    padding: 0;
    margin: 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    cursor: pointer;
}
[data-expands] svg {
    margin-top: 0;
    width: 1em;
    height: 1em;
}
[data-expands][aria-expanded="true"] svg .up-strut {
    display: none;
}
[data-expands]:focus {
    outline: none;
}
p:empty {
    display: none;
}
*:not(p) + p:empty + p {
    margin-top: 2.25rem;
}
/* WCAG and principles */

.wcag ul li {
    font-size: 0.85em;
}
.principles p {
    font-size: 0.85rem;
    margin-top: 0.75rem;
}
.principles.with-desc > li + li,
.wcag.with-desc > li + li {
    border-top: 1px solid;
    margin-top: 0.75rem;
    padding-top: 0.75rem;
}
/* Site errors */

.site-error {
    padding: 1.5rem;
    background: #efefef;
}
.site-error strong {
    color: #C83737;
}
/* SVG icons */

a svg,
button svg,
h1 svg {
    height: 0.75em;
    width: auto;
    margin-right: 0.25em;
}
h1 svg,
li > svg,
h2 a svg {
    height: 1em;
    vertical-align: middle;
}
h1 svg {
    margin-right: 0;
}
.print {
    white-space: nowrap;
}
.svg-outer {
    width: 0.75em;
    display: inline-block;
    vertical-align: middle;
}
/* Color palettes */

.colors {
    display: flex;
    height: 5rem;
    margin: -0.25rem;
    list-style: none;
    flex-wrap: nowrap;
}
.colors li {
    margin: 0.25rem;
    flex: 1 0 auto;
    position: relative;
}
.colors span {
    line-height: 1;
    background-color: #111;
    color: #fff;
    font-size: 0.75rem;
    padding: 0.25rem;
    position: absolute;
    bottom: 0.25rem;
    right: 0.25rem;
}
/* cross references */

.pattern-link {
    font-weight: bold;
}
/* inline demos */

[id^="js-demo-"] {
    all: initial;
    display: block;
}
/* Section links */

.h2-container {
    position: relative;
    font-size: 1.66rem;
}
.h2-container a {
    position: absolute;
    margin-top: 0;
    top: 0;
    line-height: 1;
    left: -1em;
    border: 0;
}
/* Single page layout */

.wrapper.print-version .main-and-footer {
    margin-left: 0;
}
.wrapper.print-version .intro-and-nav {
    position: static;
    border: 0;
    width: auto;
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
}
.wrapper.print-version main {
    min-height: 0;
}
.wrapper.print-version .library-desc {
    font-size: 1rem;
}
.wrapper.print-version .intro-and-nav > div {
    height: auto;
}
.wrapper.print-version #patterns-list {
    margin-left: 0;
    margin-top: 1.5rem;
    display: block;
}
.wrapper.print-version .toc {
    font-size: 1rem;
}
.wrapper.print-version .toc h2 {
    font-size: 1.66rem;
}
.wrapper.print-version #patterns-list h3 {
    font-size: 1.25rem;
}
.wrapper.print-version .patterns {
  margin-top: 0;
}
.pattern-section:not(:last-child) {
    padding-bottom: 2.25rem;
    border-bottom: 2px solid;
}
.pattern-section h1 {
    padding: 0 !important;
}
@media screen and (max-width: 45em) {
    [role="banner"] {
        position: static;
        width: auto;
        height: auto;
    }
    .intro {
        text-align: center;
    }
    .intro-and-nav > div {
        padding: 1.5rem;
    }
    .main-and-footer {
        margin: 0;
    }
    .patterns h3 {
        font-size: 1.125rem;
        border-top: 4px solid;
        border-bottom: 4px solid;
        padding: 0.75rem 0;
    }
    .patterns li:not(.pattern) {
        margin-top: 0;
    }
    .patterns ul ul {
        margin: 0;
    }
    .patterns li {
        margin-top: 0;
    }
    .pattern {
        font-size: 1rem;
    }
    .pattern a {
        padding: 0.75rem 0;
    }
    .pattern [aria-current] {
        background-image: none;
    }
    .pattern + .pattern {
        border-top: 1px solid;
        margin-top: 0;
    }
    #menu-button {
        display: block;
    }
    #patterns-list {
        display: none;
    }
    .toc-link {
      display: none;
    }
    [aria-expanded="true"] + #patterns-list {
        display: block;
    }
    code {
      word-break: break-all;
    }
    .tested th,
    .tested td {
        display: block;
    }
    .tested td + td {
        border-top: 0;
    }
}
@media print {
    .wrapper:not(.print-version) .intro-and-nav,
    .wrapper:not(.print-version) [role="contentinfo"] {
        display: none;
    }
    .main-and-footer {
        margin-left: 0;
    }
    a {
        border: 0;
    }
    main a::after {
        content: " (" attr(href) ")";
        word-break: break-word;
    }
    main nav a::after {
        content: '';
    }
    .cmd {
        background: #fff;
        color: #111;
    }
    pre code {
        white-space: pre-wrap !important;
    }
    .line-numbers .line-numbers-rows {
        display: none;
    }
    .line-numbers code {
        padding-left: 0;
    }
    .expandable-section {
        border: 0;
        padding: 0;
    }
    .expandable-section + p {
        margin-top: 0.75rem;
    }
    [id^="js-expandable-"] {
        display: block;
    }
    [data-expands] svg {
        display: none;
    }
    main *:not(.with-desc) {
        page-break-inside: avoid;
    }
    .note.warning {
        border-left: 0.5rem solid;
        background: none;
    }
}