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rustdoc.css
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/* See FiraSans-LICENSE.txt for the Fira Sans license. */
@font-face {
font-family: 'Fira Sans';
font-style: normal;
font-weight: 400;
src: local('Fira Sans'),
url("FiraSans-Regular-018c141bf0843ffd.woff2") format("woff2");
font-display: swap;
}
@font-face {
font-family: 'Fira Sans';
font-style: normal;
font-weight: 500;
src: local('Fira Sans Medium'),
url("FiraSans-Medium-8f9a781e4970d388.woff2") format("woff2");
font-display: swap;
}
/* See SourceSerif4-LICENSE.md for the Source Serif 4 license. */
@font-face {
font-family: 'Source Serif 4';
font-style: normal;
font-weight: 400;
src: local('Source Serif 4'),
url("SourceSerif4-Regular-1f7d512b176f0f72.ttf.woff2") format("woff2");
font-display: swap;
}
@font-face {
font-family: 'Source Serif 4';
font-style: italic;
font-weight: 400;
src: local('Source Serif 4 Italic'),
url("SourceSerif4-It-d034fe4ef9d0fa00.ttf.woff2") format("woff2");
font-display: swap;
}
@font-face {
font-family: 'Source Serif 4';
font-style: normal;
font-weight: 700;
src: local('Source Serif 4 Bold'),
url("SourceSerif4-Bold-124a1ca42af929b6.ttf.woff2") format("woff2");
font-display: swap;
}
/* See SourceCodePro-LICENSE.txt for the Source Code Pro license. */
@font-face {
font-family: 'Source Code Pro';
font-style: normal;
font-weight: 400;
/* Avoid using locally installed font because bad versions are in circulation:
* see https://github.com/rust-lang/rust/issues/24355 */
src: url("SourceCodePro-Regular-562dcc5011b6de7d.ttf.woff2") format("woff2");
font-display: swap;
}
@font-face {
font-family: 'Source Code Pro';
font-style: italic;
font-weight: 400;
src: url("SourceCodePro-It-1cc31594bf4f1f79.ttf.woff2") format("woff2");
font-display: swap;
}
@font-face {
font-family: 'Source Code Pro';
font-style: normal;
font-weight: 600;
src: url("SourceCodePro-Semibold-d899c5a5c4aeb14a.ttf.woff2") format("woff2");
font-display: swap;
}
/* Avoid using legacy CJK serif fonts in Windows like Batang. */
@font-face {
font-family: 'NanumBarunGothic';
src: url("NanumBarunGothic-0f09457c7a19b7c6.ttf.woff2") format("woff2");
font-display: swap;
unicode-range: U+AC00-D7AF, U+1100-11FF, U+3130-318F, U+A960-A97F, U+D7B0-D7FF;
}
* {
box-sizing: border-box;
}
/* This part handles the "default" theme being used depending on the system one. */
html {
content: "";
}
@media (prefers-color-scheme: light) {
html {
content: "light";
}
}
@media (prefers-color-scheme: dark) {
html {
content: "dark";
}
}
/* General structure and fonts */
body {
/* Line spacing at least 1.5 per Web Content Accessibility Guidelines
https://www.w3.org/WAI/WCAG21/Understanding/visual-presentation.html */
font: 1rem/1.5 "Source Serif 4", NanumBarunGothic, serif;
margin: 0;
position: relative;
/* We use overflow-wrap: break-word for Safari, which doesn't recognize
`anywhere`: https://developer.mozilla.org/en-US/docs/Web/CSS/overflow-wrap */
overflow-wrap: break-word;
/* Then override it with `anywhere`, which is required to make non-Safari browsers break
more aggressively when we want them to. */
overflow-wrap: anywhere;
-webkit-font-feature-settings: "kern", "liga";
-moz-font-feature-settings: "kern", "liga";
font-feature-settings: "kern", "liga";
background-color: var(--main-background-color);
color: var(--main-color);
}
h1 {
font-size: 1.5rem; /* 24px */
}
h2 {
font-size: 1.375rem; /* 22px */
}
h3 {
font-size: 1.25rem; /* 20px */
}
h1, h2, h3, h4, h5, h6 {
font-weight: 500;
}
h1, h2, h3, h4 {
margin: 25px 0 15px 0;
padding-bottom: 6px;
}
.docblock h3, .docblock h4, h5, h6 {
margin: 15px 0 5px 0;
}
.docblock > h2:first-child,
.docblock > h3:first-child,
.docblock > h4:first-child,
.docblock > h5:first-child,
.docblock > h6:first-child {
margin-top: 0;
}
h1.fqn {
margin: 0;
padding: 0;
flex-grow: 1;
/* We use overflow-wrap: break-word for Safari, which doesn't recognize
`anywhere`: https://developer.mozilla.org/en-US/docs/Web/CSS/overflow-wrap */
overflow-wrap: break-word;
/* Then override it with `anywhere`, which is required to make non-Safari browsers break
more aggressively when we want them to. */
overflow-wrap: anywhere;
}
.main-heading {
display: flex;
flex-wrap: wrap;
padding-bottom: 6px;
margin-bottom: 15px;
}
/* The only headings that get underlines are:
Markdown-generated headings within the top-doc
Rustdoc-generated h2 section headings (e.g. "Implementations", "Required Methods", etc)
Underlines elsewhere in the documentation break up visual flow and tend to invert
section hierarchies. */
.content h2,
.top-doc .docblock > h3,
.top-doc .docblock > h4 {
border-bottom: 1px solid var(--headings-border-bottom-color);
}
h3.code-header {
font-size: 1.125rem; /* 18px */
}
h4.code-header {
font-size: 1rem;
}
.code-header {
font-weight: 600;
margin: 0;
padding: 0;
}
#crate-search,
h1, h2, h3, h4, h5, h6,
.sidebar,
.mobile-topbar,
.search-input,
.search-results .result-name,
.item-left > a,
.out-of-band,
span.since,
a.srclink,
#help-button > a,
summary.hideme,
.scraped-example-list,
/* This selector is for the items listed in the "all items" page. */
ul.all-items {
font-family: "Fira Sans", Arial, NanumBarunGothic, sans-serif;
}
#toggle-all-docs,
a.anchor,
.small-section-header a,
#source-sidebar a,
pre.rust a,
.sidebar h2 a,
.sidebar h3 a,
.mobile-topbar h2 a,
h1 a,
.search-results a,
.stab,
.result-name .primitive > i, .result-name .keyword > i {
color: var(--main-color);
}
.content span.enum, .content a.enum,
.content span.struct, .content a.struct,
.content span.union, .content a.union,
.content span.primitive, .content a.primitive,
.content span.type, .content a.type,
.content span.foreigntype, .content a.foreigntype {
color: var(--type-link-color);
}
.content span.trait, .content a.trait,
.content span.traitalias, .content a.traitalias {
color: var(--trait-link-color);
}
.content span.associatedtype, .content a.associatedtype,
.content span.constant, .content a.constant,
.content span.static, .content a.static {
color: var(--assoc-item-link-color);
}
.content span.fn, .content a.fn,
.content span.method, .content a.method,
.content span.tymethod, .content a.tymethod {
color: var(--function-link-color);
}
.content span.attr, .content a.attr,
.content span.derive, .content a.derive,
.content span.macro, .content a.macro {
color: var(--macro-link-color);
}
.content span.mod, .content a.mod {
color: var(--mod-link-color);
}
.content span.keyword, .content a.keyword {
color: var(--keyword-link-color);
}
a {
color: var(--link-color);
}
ol, ul {
padding-left: 24px;
}
ul ul, ol ul, ul ol, ol ol {
margin-bottom: .625em;
}
p {
/* Paragraph spacing at least 1.5 times line spacing per Web Content Accessibility Guidelines.
Line-height is 1.5rem, so line spacing is .5rem; .75em is 1.5 times that.
https://www.w3.org/WAI/WCAG21/Understanding/visual-presentation.html */
margin: 0 0 .75em 0;
}
/* For the last child of a div, the margin will be taken care of
by the margin-top of the next item. */
p:last-child {
margin: 0;
}
/* Fix some style changes due to normalize.css 8 */
button {
/* Buttons on Safari have different default padding than other platforms. Make them the same. */
padding: 1px 6px;
/* Opinionated tweak: use pointer cursor as clickability signifier. */
cursor: pointer;
}
/* end tweaks for normalize.css 8 */
button#toggle-all-docs {
padding: 0;
background: none;
border: none;
/* iOS button gradient: https://stackoverflow.com/q/5438567 */
-webkit-appearance: none;
opacity: 1;
}
.rustdoc {
display: flex;
flex-direction: row;
flex-wrap: nowrap;
}
main {
position: relative;
flex-grow: 1;
padding: 10px 15px 40px 45px;
min-width: 0; /* avoid growing beyond the size limit */
}
.source main {
padding: 15px;
}
.width-limiter {
max-width: 960px;
margin-right: auto;
}
details:not(.rustdoc-toggle) summary {
margin-bottom: .6em;
}
code, pre, a.test-arrow, .code-header {
font-family: "Source Code Pro", monospace;
}
.docblock code, .docblock-short code {
border-radius: 3px;
padding: 0 0.125em;
}
.docblock pre code, .docblock-short pre code {
padding: 0;
}
pre {
padding: 14px;
line-height: 1.5; /* https://github.com/rust-lang/rust/issues/105906 */
}
.item-decl pre {
overflow-x: auto;
}
.source .content pre {
padding: 20px;
}
.rustdoc.source .example-wrap > pre.src-line-numbers {
padding: 20px 0 20px 4px;
}
img {
max-width: 100%;
}
.sub-logo-container, .logo-container {
/* zero text boxes so that computed line height = image height exactly */
line-height: 0;
}
.sub-logo-container {
margin-right: 32px;
}
.sub-logo-container > img {
height: 60px;
width: 60px;
object-fit: contain;
}
.rust-logo {
filter: var(--rust-logo-filter);
}
.sidebar {
font-size: 0.875rem;
flex: 0 0 200px;
overflow-y: scroll;
position: sticky;
height: 100vh;
top: 0;
left: 0;
}
.rustdoc.source .sidebar {
flex-basis: 50px;
border-right: 1px solid;
overflow-x: hidden;
/* The sidebar is by default hidden */
overflow-y: hidden;
}
.sidebar, .mobile-topbar, .sidebar-menu-toggle,
#src-sidebar-toggle, #source-sidebar {
background-color: var(--sidebar-background-color);
}
#src-sidebar-toggle > button:hover, #src-sidebar-toggle > button:focus {
background-color: var(--sidebar-background-color-hover);
}
.source .sidebar > *:not(#src-sidebar-toggle) {
visibility: hidden;
}
.source-sidebar-expanded .source .sidebar {
overflow-y: auto;
flex-basis: 300px;
}
.source-sidebar-expanded .source .sidebar > *:not(#src-sidebar-toggle) {
visibility: visible;
}
#all-types {
margin-top: 1em;
}
/* Improve the scrollbar display on firefox */
* {
scrollbar-width: initial;
scrollbar-color: var(--scrollbar-color);
}
.sidebar {
scrollbar-width: thin;
scrollbar-color: var(--scrollbar-color);
}
/* Improve the scrollbar display on webkit-based browsers */
::-webkit-scrollbar {
width: 12px;
}
.sidebar::-webkit-scrollbar {
width: 8px;
}
::-webkit-scrollbar-track {
-webkit-box-shadow: inset 0;
background-color: var(--scrollbar-track-background-color);
}
.sidebar::-webkit-scrollbar-track {
background-color: var(--scrollbar-track-background-color);
}
::-webkit-scrollbar-thumb, .sidebar::-webkit-scrollbar-thumb {
background-color: var(--scrollbar-thumb-background-color);
}
/* Everything else */
.hidden {
display: none !important;
}
.sidebar .logo-container {
margin-top: 10px;
margin-bottom: 10px;
text-align: center;
}
.version {
overflow-wrap: break-word;
}
.logo-container > img {
height: 100px;
width: 100px;
}
ul.block, .block li {
padding: 0;
margin: 0;
list-style: none;
}
.sidebar-elems a,
.sidebar > h2 a {
display: block;
padding: 0.25rem; /* 4px */
margin-left: -0.25rem;
}
.sidebar h2 {
overflow-wrap: anywhere;
padding: 0;
margin: 0.7rem 0;
}
.sidebar h3 {
font-size: 1.125rem; /* 18px */
padding: 0;
margin: 0;
}
.sidebar-elems,
.sidebar > h2 {
padding-left: 24px;
}
.sidebar a, .sidebar .current {
color: var(--sidebar-link-color);
}
.sidebar .current,
.sidebar a:hover {
background-color: var(--sidebar-current-link-background-color);
}
.sidebar-elems .block {
margin-bottom: 2em;
}
.sidebar-elems .block li a {
white-space: nowrap;
text-overflow: ellipsis;
overflow: hidden;
}
.mobile-topbar {
display: none;
}
.rustdoc .example-wrap {
display: flex;
position: relative;
margin-bottom: 10px;
}
/* For the last child of a div, the margin will be taken care of
by the margin-top of the next item. */
.rustdoc .example-wrap:last-child {
margin-bottom: 0px;
}
.rustdoc .example-wrap > pre {
margin: 0;
flex-grow: 1;
overflow-x: auto;
}
.rustdoc .example-wrap > pre.example-line-numbers,
.rustdoc .example-wrap > pre.src-line-numbers {
flex-grow: 0;
min-width: fit-content; /* prevent collapsing into nothing in truncated scraped examples */
overflow: initial;
text-align: right;
-webkit-user-select: none;
-moz-user-select: none;
-ms-user-select: none;
user-select: none;
padding: 14px 8px;
color: var(--src-line-numbers-span-color);
}
.rustdoc .example-wrap > pre.src-line-numbers {
padding: 14px 0;
}
.src-line-numbers a, .src-line-numbers span {
color: var(--src-line-numbers-span-color);
padding: 0 8px;
}
.src-line-numbers :target {
background-color: transparent;
border-right: none;
padding: 0 8px;
}
.src-line-numbers .line-highlighted {
background-color: var(--src-line-number-highlighted-background-color);
}
.search-loading {
text-align: center;
}
.docblock-short {
overflow-wrap: break-word;
overflow-wrap: anywhere;
}
/* Wrap non-pre code blocks (`text`) but not (```text```). */
.docblock :not(pre) > code,
.docblock-short code {
white-space: pre-wrap;
}
.top-doc .docblock h2 { font-size: 1.375rem; }
.top-doc .docblock h3 { font-size: 1.25rem; }
.top-doc .docblock h4,
.top-doc .docblock h5 {
font-size: 1.125rem;
}
.top-doc .docblock h6 {
font-size: 1rem;
}
.docblock h5 { font-size: 1rem; }
.docblock h6 { font-size: 0.875rem; }
.docblock {
margin-left: 24px;
position: relative;
}
.docblock > :not(.more-examples-toggle):not(.example-wrap) {
max-width: 100%;
overflow-x: auto;
}
.out-of-band {
flex-grow: 0;
font-size: 1.125rem;
}
.docblock code, .docblock-short code,
pre, .rustdoc.source .example-wrap {
background-color: var(--code-block-background-color);
}
#main-content {
position: relative;
}
.docblock table {
margin: .5em 0;
border-collapse: collapse;
}
.docblock table td, .docblock table th {
padding: .5em;
border: 1px solid var(--border-color);
}
.docblock table tbody tr:nth-child(2n) {
background: var(--table-alt-row-background-color);
}
/* Shift "where ..." part of method or fn definition down a line */
.method .where,
.fn .where,
.where.fmt-newline {
display: block;
font-size: 0.875rem;
}
.item-info {
display: block;
margin-left: 24px;
}
.item-info code {
font-size: 0.875rem;
}
#main-content > .item-info {
margin-left: 0;
}
nav.sub {
flex-grow: 1;
flex-flow: row nowrap;
margin: 4px 0 25px 0;
display: flex;
align-items: center;
}
.search-form {
position: relative;
display: flex;
height: 34px;
flex-grow: 1;
}
.source nav.sub {
margin: 0 0 15px 0;
}
a {
text-decoration: none;
}
.small-section-header {
/* fields use <span> tags, but should get their own lines */
display: block;
position: relative;
}
.small-section-header:hover > .anchor, .impl:hover > .anchor,
.trait-impl:hover > .anchor, .variant:hover > .anchor {
display: initial;
}
.anchor {
display: none;
position: absolute;
left: -0.5em;
background: none !important;
}
.anchor.field {
left: -5px;
}
.small-section-header > .anchor {
left: -15px;
padding-right: 8px;
}
h2.small-section-header > .anchor {
padding-right: 6px;
}
.main-heading a:hover,
.example-wrap > pre.rust a:hover,
.all-items a:hover,
.docblock a:not(.test-arrow):not(.scrape-help):hover,
.docblock-short a:not(.test-arrow):not(.scrape-help):hover,
.item-info a {
text-decoration: underline;
}
.crate.block a.current { font-weight: 500; }
/* In most contexts we use `overflow-wrap: anywhere` to ensure that we can wrap
as much as needed on mobile (see
src/test/rustdoc-gui/type-declaration-overflow.goml for an example of why
this matters). The `anywhere` value means:
"Soft wrap opportunities introduced by the word break are considered when
calculating min-content intrinsic sizes."
https://developer.mozilla.org/en-US/docs/Web/CSS/overflow-wrap#values
For table layouts, that becomes a problem: the browser tries to make each
column as narrow as possible, and `overflow-wrap: anywhere` means it can do
so by breaking words - even if some other column could be shrunk without
breaking words! This shows up, for instance, in the `Structs` / `Modules` /
`Functions` (etcetera) sections of a module page, and when a docblock
contains a table.
So, for table layouts, override the default with break-word, which does
_not_ affect min-content intrinsic sizes.
*/
table,
.item-table {
overflow-wrap: break-word;
}
.item-table {
display: table;
}
.item-row {
display: table-row;
}
.item-left, .item-right {
display: table-cell;
}
.item-left {
padding-right: 1.25rem;
}
.search-results-title {
margin-top: 0;
white-space: nowrap;
/* flex layout allows shrinking the <select> appropriately if it becomes too large */
display: flex;
/* make things look like in a line, despite the fact that we're using a layout
with boxes (i.e. from the flex layout) */
align-items: baseline;
}
#crate-search-div {
/* ensures that 100% in properties of #crate-search-div:after
are relative to the size of this div */
position: relative;
/* allows this div (and with it the <select>-element "#crate-search") to be shrunk */
min-width: 5em;
}
#crate-search {
min-width: 115px;
/* keep these two in sync with "@-moz-document url-prefix()" below */
padding: 0 23px 0 4px;
/* prevents the <select> from overflowing the containing div in case it's shrunk */
max-width: 100%;
/* contents can overflow because of max-width limit, then show ellipsis */
text-overflow: ellipsis;
border: 1px solid var(--border-color);
border-radius: 4px;
outline: none;
cursor: pointer;
-moz-appearance: none;
-webkit-appearance: none;
/* Removes default arrow from firefox */
text-indent: 0.01px;
background-color: var(--main-background-color);
color: inherit;
line-height: 1.5;
font-weight: 500;
}
#crate-search:hover, #crate-search:focus {
border-color: var(--crate-search-hover-border);
}
/* cancel stylistic differences in padding in firefox
for "appearance: none"-style (or equivalent) <select>s */
@-moz-document url-prefix() {
#crate-search {
padding-left: 0px; /* == 4px - 4px */
padding-right: 19px; /* == 23px - 4px */
}
}
/* pseudo-element for holding the dropdown-arrow image; needs to be a separate thing
so that we can apply CSS-filters to change the arrow color in themes */
#crate-search-div::after {
/* lets clicks through! */
pointer-events: none;
/* completely covers the underlying div */
width: 100%;
height: 100%;
position: absolute;
top: 0;
left: 0;
content: "";
background-repeat: no-repeat;
background-size: 20px;
background-position: calc(100% - 2px) 56%;
/* image is black color */
background-image: url("down-arrow-927217e04c7463ac.svg");
/* changes the arrow image color */
filter: var(--crate-search-div-filter);
}
#crate-search-div:hover::after, #crate-search-div:focus-within::after {
filter: var(--crate-search-div-hover-filter);
}
#crate-search > option {
font-size: 1rem;
}
.search-input {
/* Override Normalize.css: it has a rule that sets
-webkit-appearance: textfield for search inputs. That
causes rounded corners and no border on iOS Safari. */
-webkit-appearance: none;
outline: none;
border: 1px solid var(--border-color);
border-radius: 2px;
padding: 8px;
font-size: 1rem;
flex-grow: 1;
background-color: var(--button-background-color);
color: var(--search-color);
}
.search-input:focus {
border-color: var(--search-input-focused-border-color);
}
.search-results {
display: none;
}
.search-results.active {
display: block;
}
.search-results > a {
display: flex;
/* A little margin ensures the browser's outlining of focused links has room to display. */
margin-left: 2px;
margin-right: 2px;
border-bottom: 1px solid var(--search-result-border-color);
gap: 1em;
}
.search-results > a > div {
flex: 1;
}
.search-results > a > div.desc {
white-space: nowrap;
text-overflow: ellipsis;
overflow: hidden;
}
.search-results a:hover,
.search-results a:focus {
background-color: var(--search-result-link-focus-background-color);
}
.search-results .result-name span.alias {
color: var(--search-results-alias-color);
}
.search-results .result-name span.grey {
color: var(--search-results-grey-color);
}
.popover {
position: absolute;
top: 100%;
right: 0;
z-index: 2;
margin-top: 7px;
border-radius: 3px;
border: 1px solid var(--border-color);
background-color: var(--main-background-color);
color: var(--main-color);
--popover-arrow-offset: 11px;
}
/* This rule is to draw the little arrow connecting the settings menu to the gear icon. */
.popover::before {
content: '';
position: absolute;
right: var(--popover-arrow-offset);
border: solid var(--border-color);
border-width: 1px 1px 0 0;
background-color: var(--main-background-color);
padding: 4px;
transform: rotate(-45deg);
top: -5px;
}
/* use larger max-width for help popover, but not for help.html */
#help.popover {
max-width: 600px;
--popover-arrow-offset: 48px;
}
#help dt {
float: left;
clear: left;
margin-right: 0.5rem;
}
#help span.top, #help span.bottom {
text-align: center;
display: block;
font-size: 1.125rem;
}
#help span.top {
margin: 10px 0;
border-bottom: 1px solid var(--border-color);
padding-bottom: 4px;
margin-bottom: 6px;
}
#help span.bottom {
clear: both;
border-top: 1px solid var(--border-color);
}
.side-by-side > div {
width: 50%;
float: left;
padding: 0 20px 20px 17px;
}
.item-info .stab {
/* This min-height is needed to unify the height of the stab elements because some of them
have emojis.
*/
min-height: 36px;
display: flex;
padding: 3px;
margin-bottom: 5px;
}
.item-left .stab {
margin-left: 0.3125em;
}
.stab {
padding: 0 2px;
font-size: 0.875rem;
font-weight: normal;
color: var(--main-color);
background-color: var(--stab-background-color);
width: fit-content;
align-items: center;
white-space: pre-wrap;
border-radius: 3px;
display: inline-flex;
vertical-align: text-bottom;
}
.stab.portability > code {
background: none;
color: var(--stab-code-color);
}
.stab .emoji {
font-size: 1.25rem;
margin-right: 0.3rem;
}
/* Black one-pixel outline around emoji shapes */
.emoji {
text-shadow:
1px 0 0 black,
-1px 0 0 black,
0 1px 0 black,
0 -1px 0 black;
}
.module-item.unstable,
.import-item.unstable {
opacity: 0.65;
}
.since {
font-weight: normal;
font-size: initial;
}
.rightside {
padding-left: 12px;
float: right;
}
.rightside:not(a),
.out-of-band {