style.css

/*--------------------- CSS Variables ----------------------------*/
:root {
  --black: #000000;
  --black1: #090c15;
  --black2: #2c3437;
  --black3: #0d111d;
  --blue1: #0a56b2;
  --white: #ffffff;
  --white-smoke: #f2f2f2;
  --grey-smoke: #e9edf0;
  --red1: #d60027;
  --red2: #d50027;
  --red3: #ca5010;
  --red4: #ff7070;
  --green1: #3e7a38;
  --green2: #5a8147;
  --green3: #64de64;
  --green4: #99cc7d;
  --green5: #84ba64;
  --gray1: #707070;
  --gray2: #b4b4b4;
  --gray3: #cccccc;
  --gray4: #040404;
  --gray5: #7a7a7a;
  --gray6: #333333;
  --gray7: #c1c1c1;
  --grey8: #ddd;

  --background-color-api-stability-link: rgba(255, 255, 255, .4);
  --background-color-highlight: var(--white-smoke);
  --color-brand-primary: var(--gray6);
  --color-brand-secondary: var(--green1);
  --color-critical: var(--red1);
  --color-fill-app: var(--white);
  --color-fill-side-nav: var(--gray6);
  --color-links: var(--green1);
  --color-text-mark: var(--gray1);
  --color-text-nav: var(--gray3);
  --color-text-primary: var(--gray6);
  --color-text-secondary: var(--green2);
}

h2 :target,
h3 :target,
h4 :target,
h5 :target {
  scroll-margin-top: 55px;
}

.dark-mode {
  --background-color-highlight: var(--black2);
  --color-critical: var(--red4);
  --color-fill-app: var(--black1);
  --color-fill-side-nav: var(--black3);
  --color-links: var(--green5);
  --color-text-mark: var(--gray5);
  --color-text-primary: var(--white);
}

.dark-mode code,
.dark-mode tt {
  color: var(--grey-smoke);
  background-color: var(--background-color-highlight);
}
.dark-mode a code {
  color: var(--green3);
}

/*--------------------- Layout and Typography ----------------------------*/
html {
  font-size: 1rem;
  overflow-wrap: break-word;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  -webkit-font-variant-ligatures: none;
          font-variant-ligatures: none;
}

* {
  box-sizing: border-box;
}

body {
  font-family: Lato, "Lucida Grande", "Lucida Sans Unicode", "Lucida Sans", Verdana, Tahoma, sans-serif;
  margin: 0;
  padding: 0;
  color: var(--color-text-primary);
  background-color: var(--color-fill-app);
}

h1, h1 code { font-size: 2.5rem; }
h2, h2 code { font-size: 2rem; }
h3, h3 code { font-size: 1.75rem; }
h4, h4 code { font-size: 1.5rem; }
h5, h5 code { font-size: 1.25rem; }
h6, h6 code { font-size: 1rem; }

h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 700;
  line-height: inherit;
  position: relative;
  margin: 1.5rem 0 1rem;
  text-rendering: optimizeLegibility;
}

h1 code,
h2 code,
h3 code,
h4 code,
h5 code,
h6 code {
  color: inherit;
  font-family: inherit;
}

pre,
tt,
code,
.pre,
span.type,
a.type {
  font-family: SFMono-Regular, Menlo, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: .9em;
}

#content {
  position: relative;
}

a:link,
a:active,
a:visited {
  color: var(--color-links);
  text-decoration: none;
  border-radius: 2px;
  padding: 1px 3px;
}

a:hover,
a:focus {
  color: var(--white);
  background-color:var(--green1);
  outline: none;
}

strong {
  font-weight: 700;
}

code a:hover {
  background-color: transparent;
}

em code {
  font-style: normal;
}

#changelog #gtoc {
  display: none;
}

#gtoc {
  margin-top: .5rem;
  margin-bottom: 1rem;
}

#gtoc > ul {
  list-style: none;
  margin-left: 0;
  line-height: 1.5rem;
}

.critical, .critical code {
  color: var(--color-critical);
}

li.picker-header {
  position: relative;
}

li.picker-header .collapsed-arrow, li.picker-header .expanded-arrow {
  width: 1.5ch;
  height: 1.5em;
}

li.picker-header .collapsed-arrow {
  display: inline-block;
}

li.picker-header .expanded-arrow {
  display: none;
}

li.picker-header.expanded .collapsed-arrow, 
:root:not(.has-js) li.picker-header:hover .collapsed-arrow {
  display: none;
}

li.picker-header.expanded .expanded-arrow, 
:root:not(.has-js) li.picker-header:hover .expanded-arrow {
  display: inline-block;
}

li.picker-header.expanded > a,
:root:not(.has-js) li.picker-header:hover > a {
  border-radius: 2px 2px 0 0;
}

li.picker-header.expanded > .picker, 
:root:not(.has-js) li.picker-header:hover > .picker {
  display: block;
  z-index: 1;
}

li.picker-header a span {
  font-size: .7rem;
}

.picker {
  background-color: var(--color-fill-app);
  border: 1px solid var(--color-brand-secondary);
  border-radius: 0 0 2px 2px;
  display: none;
  list-style: none;
  position: absolute;
  left: 0;
  top: 100%;
  width: max-content;
  min-width: min(300px, 75vw);
  max-width: 75vw;
  max-height: min(600px, 60vh);
  overflow-y: auto;
}

.picker > ul, .picker > ol {
  list-style: none;
  margin-left: 0;
  line-height: 1.5rem;
}

.picker li {
  display: block;
  border-right: 0;
  margin-right: 0;
}

.picker li a {
  border-radius: 0;
  display: block;
  margin: 0;
  padding: .1rem;
  padding-left: 1rem;
}

.picker li a.active,
.picker li a.active:hover,
.picker li a.active:focus {
  font-weight: 700;
}

.picker li:last-child a {
  border-bottom-right-radius: 1px;
  border-bottom-left-radius: 1px;
}

.gtoc-picker-header {
  display: none;
}

.line {
  width: calc(100% - 1rem);
  display: block;
  padding-bottom: 1px;
}

.picker .line {
  margin: 0;
  width: 100%;
}

.api_stability {
  color: var(--white) !important;
  margin: 0 0 1rem;
  padding: 1rem;
  line-height: 1.5;
}

.api_stability * {
  color: var(--white) !important;
}

.api_stability a {
  text-decoration: underline;
}

.api_stability a:hover,
.api_stability a:active,
.api_stability a:focus {
  background-color: var(--background-color-api-stability-link);
}

.api_stability a code {
  background-color: transparent;
}

.api_stability_0 {
  background-color: var(--red1);
}

.api_stability_1 {
  background-color: var(--red3);
}

.api_stability_2 {
  background-color: var(--green2);
}

.api_stability_3 {
  background-color: var(--blue1);
}

.module_stability {
  vertical-align: middle;
}

.api_metadata {
  font-size: .85rem;
  margin-bottom: 1rem;
}

.api_metadata span {
  margin-right: 1rem;
}

.api_metadata span:last-child {
  margin-right: 0;
}

ul.plain {
  list-style: none;
}

abbr {
  border-bottom: 1px dotted #454545;
}

p {
  text-rendering: optimizeLegibility;
  margin: 0 0 1.125rem;
  line-height: 1.5;
}

#apicontent > *:last-child {
  margin-bottom: 0;
  padding-bottom: 2rem;
}

table {
  border-collapse: collapse;
  margin: 0 0 1.5rem;
}

th,
td {
  border: 1px solid #aaa;
  padding: .5rem;
  vertical-align: top;
}

th {
  text-align: left;
}

td {
  word-break: break-all; /* Fallback if break-word isn't supported */
  word-break: break-word;
}

@media only screen and (min-width: 600px) {
  th,
  td {
    padding: .75rem 1rem;
  }

  td:first-child {
    word-break: normal;
  }
}

ol,
ul,
dl {
  margin: 0 0 .6rem;
  padding: 0;
}

ol ul,
ol ol,
ol dl,
ul ul,
ul ol,
ul dl,
dl ul,
dl ol,
dl dl {
  margin-bottom: 0;
}

ul,
ol {
  margin-left: 2rem;
}

dl dt {
  position: relative;
  margin: 1.5rem 0 0;
}

dl dd {
  position: relative;
  margin: 0 1rem;
}

dd + dt.pre {
  margin-top: 1.6rem;
}

#apicontent {
  padding-top: 1rem;
}

#apicontent section {
  content-visibility: auto;
  contain-intrinsic-size: 1px auto 5000px;
}

#apicontent .line {
  width: calc(50% - 1rem);
  margin: 1rem 1rem .95rem;
  background-color: #ccc;
}

h2 + h2 {
  margin: 0 0 .5rem;
}

h3 + h3 {
  margin: 0 0 .5rem;
}

h2,
h3,
h4,
h5 {
  position: relative;
  padding-right: 40px;
}

.srclink {
  float: right;
  font-size: smaller;
  margin-right: 30px;
}

h1 span,
h2 span,
h3 span,
h4 span {
  position: absolute;
  display: block;
  top: 0;
  right: 0;
}

h1 span:hover,
h2 span:hover,
h3 span:hover,
h4 span:hover {
  opacity: 1;
}

h1 span a,
h2 span a,
h3 span a,
h4 span a {
  color: #000;
  text-decoration: none;
  font-weight: 700;
}

pre,
tt,
code {
  line-height: 1.5rem;
  margin: 0;
  padding: 0;
}

.pre {
  line-height: 1.5rem;
}

pre {
  padding: 1rem;
  vertical-align: top;
  background-color: var(--background-color-highlight);
  margin: 1rem;
  overflow-x: auto;
}

pre > code {
  padding: 0;
}

pre + h3 {
  margin-top: 2.225rem;
}

code.pre {
  white-space: pre;
}

#intro {
  margin-top: 1.25rem;
  margin-left: 1rem;
}

#intro a {
  color: var(--grey8);
  font-weight: 700;
}

hr {
  background-color: transparent;
  border: medium none;
  border-bottom: 1px solid var(--gray5);
  margin: 0 0 1rem;
}

#toc > ul {
  margin-top: 1.5rem;
}

#toc p {
  margin: 0;
}

#toc ul a {
  text-decoration: none;
}

#toc ul li {
  margin-bottom: .666rem;
  list-style: square outside;
}

#toc li > ul {
  margin-top: .666rem;
}

.toc ul {
  margin: 0
}

.toc li a::before {
  content: "■";
  color: var(--color-text-primary);
  padding-right: 1em;
  font-size: 0.9em;
}

.toc li a:hover::before {
  color: var(--white);
}

.toc ul ul a {
  padding-left: 1rem;
}

.toc ul ul ul a {
  padding-left: 2rem;
}

.toc ul ul ul ul a {
  padding-left: 3rem;
}

.toc ul ul ul ul ul a {
  padding-left: 4rem;
}

.toc ul ul ul ul ul ul a {
  padding-left: 5rem;
}

#toc .stability_0::after,
.deprecated-inline::after {
  background-color: var(--red2);
  color: var(--white);
  content: "deprecated";
  margin-left: .25rem;
  padding: 1px 3px;
  border-radius: 3px;
}
#toc .stability_3::after {
  background-color: var(--blue1);
  color: var(--white);
  content: "legacy";
  margin-left: .25rem;
  padding: 1px 3px;
  border-radius: 3px;
}

.experimental-inline::after {
  background-color: var(--red3);
  color: var(--white);
  content: "experimental";
  margin-left: .25rem;
  padding: 1px 3px;
  border-radius: 3px;
}

#apicontent li {
  margin-bottom: .5rem;
}

#apicontent li:last-child {
  margin-bottom: 0;
}

tt,
code {
  color: #040404;
  background-color: #f2f2f2;
  border-radius: 2px;
  padding: 1px 3px;
}

.api_stability code {
  background-color: rgba(0, 0, 0, .1);
}

a code {
  color: inherit;
  background-color: inherit;
  padding: 0;
}

.type {
  line-height: 1.5rem;
}

#column1.interior {
  margin-left: 234px;
  padding: 0 2rem;
  -webkit-padding-start: 1.5rem;
}

#column2.interior {
  width: 234px;
  background-color: var(--color-fill-side-nav);
  position: fixed;
  left: 0;
  top: 0;
  bottom: 0;
  overflow-x: hidden;
  overflow-y: scroll;
}

#column2 ul {
  list-style: none;
  margin: .9rem 0 .5rem;
  background-color: var(--color-fill-side-nav);
}

#column2 > :first-child {
  margin: 1.25rem;
  font-size: 1.5rem;
}

#column2 > ul:nth-child(2) {
  margin: 1.25rem 0 .5rem;
}

#column2 > ul:last-child {
  margin: .9rem 0 1.25rem;
}

#column2 ul li {
  padding-left: 1.25rem;
  margin-bottom: .5rem;
  padding-bottom: .5rem;
}

#column2 .line {
  margin: 0 .5rem;
  border-color: #707070;
}

#column2 ul li:last-child {
  margin-bottom: 0;
}

#column2 ul li a,
#column2 ul li a code {
  color: var(--color-text-nav);
  border-radius: 0;
}

#column2 ul li a.active,
#column2 ul li a.active:hover,
#column2 ul li a.active:focus {
  font-weight: 700;
  color: var(--white);
  background-color: transparent;
}

#intro a:hover,
#intro a:focus,
#column2 ul li a:hover,
#column2 ul li a:focus {
  color: var(--white);
  background-color: transparent;
}

span > .mark,
span > .mark:visited {
  color: var(--color-text-mark);
  position: absolute;
  top: 0;
  right: 0;
}

span > .mark:hover,
span > .mark:focus,
span > .mark:active {
  color: var(--color-brand-secondary);
  background-color: transparent;
}

th > *:last-child,
td > *:last-child {
  margin-bottom: 0;
}

kbd {
  background-color: #eee;
  border-radius: 3px;
  border: 1px solid #b4b4b4;
  box-shadow: 0 1px 1px rgba(0, 0, 0, .2);
  color: #333;
  display: inline-block;
  font-size: .85em;
  font-weight: 700;
  padding: 2px 4px;
  white-space: nowrap;
  vertical-align: middle;
 }

.changelog > summary {
  margin: .5rem 0;
  padding: .5rem 0;
  cursor: pointer;
}

/* simpler clearfix */
.clearfix::after {
  content: ".";
  display: block;
  height: 0;
  clear: both;
  visibility: hidden;
}

/* API reference sidebar */
@media only screen and (min-width: 1025px) {
  .apidoc #column2 > .line {
    pointer-events: none;
  }
  .apidoc #column2 > :first-child,
  .apidoc #column2 > ul,
  .apidoc #column2 > ul > li {
    margin: 0;
    padding: 0;
  }
  .apidoc #column2 > :first-child > a[href] {
    border-radius: 0;
    padding: 1.25rem 1.4375rem .625rem;
    display: block;
  }
  .apidoc #column2 > ul > li > a[href] {
    padding: .5rem 1.4375rem;
    display: block;
  }
  .apidoc #column2 > ul > :first-child > a[href] {
    padding-top: .625rem;
  }
  .apidoc #column2 > ul > :last-child > a[href] {
    padding-bottom: .625rem;
  }
  .apidoc #column2 > ul:first-of-type > :last-child  > a[href] {
    padding-bottom: 1rem;
  }
  .apidoc #column2 > ul:nth-of-type(2) > :first-child > a[href] {
    padding-top: .875rem;
  }
  .apidoc #column2 > ul:nth-of-type(2) > :last-child > a[href] {
    padding-bottom: .9375rem;
  }
  .apidoc #column2 > ul:last-of-type > :first-child > a[href] {
    padding-top: 1rem;
  }
  .apidoc #column2 > ul:last-of-type > :last-child > a[href] {
    padding-bottom: 1.75rem;
  }
}

.header {
  position: sticky;
  top: -1px;
  z-index: 1;
  padding-top: 1rem;
  background-color: var(--color-fill-app);
}

@media not screen, (max-width: 600px) {
  .header {
    position: relative;
    top: 0;
  }
}

@media not screen, (max-height: 1000px) {
  :root:not(.has-js) .header {
    position: relative;
    top: 0;
  }
}

.header .pinned-header {
  display: none;
  margin-right: 0.4rem;
  font-weight: 700;
}

.header.is-pinned .header-container {
  display: none;
}

.header.is-pinned .pinned-header {
  display: inline;
}

.header.is-pinned #gtoc {
  margin: 0;
}

.header-container {
  display: flex;
  align-items: center;
  margin-bottom: 1rem;
  justify-content: space-between;
}

.header-container h1 {
  margin: 0;
}

.theme-toggle-btn {
  border: none;
  background: transparent;
  outline: var(--brand3) dotted 2px;
}

@media only screen and (min-width: 601px) {
  #gtoc > ul > li {
    display: inline;
    border-right: 1px currentColor solid;
    margin-right: .4rem;
    padding-right: .4rem;
  }

  #gtoc > ul > li:last-child {
    border-right: none;
    margin-right: 0;
    padding-right: 0;
  }

  .header #gtoc > ul > li.pinned-header {
    display: none;
  }

  .header.is-pinned #gtoc > ul > li.pinned-header {
    display: inline;
  }

  #gtoc > ul > li.gtoc-picker-header {
    display: none;
  }
}

@media only screen and (max-width: 1024px) {
  #content {
    overflow: visible;
  }
  #column1.interior {
    margin-left: 0;
    padding-left: .5rem;
    padding-right: .5rem;
    width: auto;
    overflow-y: visible;
  }
  #column2 {
    display: none;
  }

  #gtoc > ul > li.gtoc-picker-header {
    display: inline;
  }
}

.icon {
  cursor: pointer;
}

.dark-icon {
  display: block;
}

.light-icon {
  fill: var(--white);
  display: none;
}

.dark-mode {
  color-scheme: dark;
}

.dark-mode .dark-icon {
  display: none;
}

.dark-mode .light-icon {
  fill: var(--white);
  display: block;
}

.js-flavor-toggle {
  -webkit-appearance: none;
  appearance: none;
  float: right;
  background-image: url(./js-flavor-cjs.svg);
  background-size: contain;
  background-repeat: no-repeat;
  width: 142px;
  height: 20px;
  display: block;
  cursor: pointer;
  margin: 0;
}
.js-flavor-toggle:checked {
  background-image: url(./js-flavor-esm.svg);
}
.js-flavor-toggle:not(:checked) ~ .mjs,
.js-flavor-toggle:checked ~ .cjs {
  display: none;
}
.dark-mode .js-flavor-toggle {
  filter: invert(1);
}

.copy-button {
  float: right;
  
  outline: none;
  font-size: 10px;
  color: #fff;
  background-color: var(--green1);
  line-height: 1;
  border-radius: 500px;
  border: 1px solid transparent;
  letter-spacing: 2px;
  min-width: 7.5rem;
  text-transform: uppercase;
  font-weight: 700;
  padding: 0 .5rem;
  margin-right: .2rem;
  height: 1.5rem;
  transition-property: background-color,border-color,color,box-shadow,filter;
  transition-duration: .3s;
  cursor: pointer;
}

.copy-button:hover {
  background-color: var(--green2);
}

@supports (aspect-ratio: 1 / 1) {
  .js-flavor-toggle {
    height: 1.5em;
    width: auto;
    aspect-ratio: 2719 / 384;
  }
}

@media print {
  html {
    height: auto;
    font-size: .75em;
  }
  #column2.interior {
    display: none;
  }
  #column1.interior {
    margin-left: 0;
    padding: 0;
    overflow-y: auto;
  }
  .api_metadata,
  #toc,
  .srclink,
  #gtoc,
  .mark {
    display: none;
  }
  h1 {
    font-size: 2rem;
  }
  h2 {
    font-size: 1.75rem;
  }
  h3 {
    font-size: 1.5rem;
  }
  h4 {
    font-size: 1.3rem;
  }
  h5 {
    font-size: 1.2rem;
  }
  h6 {
    font-size: 1.1rem;
  }
  .api_stability {
    display: inline-block;
  }
  .api_stability a {
    text-decoration: none;
  }
  a {
    color: inherit;
  }
  #apicontent {
    overflow: hidden;
  }
  .js-flavor-toggle {
    display: none;
  }
  .js-flavor-toggle + * {
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--color-text-primary);
  }
  .js-flavor-toggle ~ * {
    display: block !important;
    background-position: top right;
    background-size: 142px 20px;
    background-repeat: no-repeat;
  }
  .js-flavor-toggle ~ .cjs {
    background-image: url(./js-flavor-cjs.svg);
  }
  .js-flavor-toggle ~ .mjs {
    background-image: url(./js-flavor-esm.svg);
  }
}