python-peps/pep_sphinx_extensions/pep_theme/static/style.css

@charset "UTF-8";
/* Styles for PEPs */

/*
 * `initial` works like undefined variables, so `var(intial, x)` will resolve to `x`.
 * A space means an empty value, so `var( , x) y` will resolve to `y`.
 */
@media (prefers-color-scheme: dark) {
   :root {
    --light: ;
    --dark: initial;
  }
}

@media (prefers-color-scheme: light) {
   :root {
    --dark: ;
    --light: initial;
  }
}

:root[data-colour_scheme="dark"] {
  --light: ;
  --dark: initial;
}

:root[data-colour_scheme="light"] {
  --dark: ;
  --light: initial;
}

/* Set master colours */
:root {
    --colour-background: var(--light, white) var(--dark, #011);
    --colour-background-accent: var(--light, #eee) var(--dark, #333);
    --colour-text: var(--light, #333) var(--dark, #ccc);
    --colour-links: var(--light, #0072aa) var(--dark, #8bf);
    --colour-scrollbar: var(--light, #ccc) var(--dark, #333);
    --colour-rule-strong: var(--light, #888) var(--dark, #777);
    --colour-rule-light: var(--light, #ddd) var(--dark, #222);
    --colour-inline-code: var(--light, #f8f8f8) var(--dark, #333);
    --colour-warning: var(--light, #fee) var(--dark, #900);
}

img.invert-in-dark-mode {
    filter: var(--dark, invert(1));
}

/* Set master rules */
* {box-sizing: border-box}
:root {color-scheme: light dark}
html {
    overflow-y: scroll;
    margin: 0;
    line-height: 1.4;
    font-weight: normal;
    font-size: 1rem;
    font-family: "Source Sans Pro", Arial, sans-serif;
}
body {
    margin: 0;
    color: var(--colour-text);
    background-color: var(--colour-background);
}
section#pep-page-section {
    padding: 0.25rem;
}

/* Reduce margin sizes for body text */
p {margin: .5rem 0}

/* Header rules */
h1 {
    font-size: 2rem;
    font-weight: bold;
    margin-top: 1.25rem;
    margin-bottom: 1rem;
}
h2 {
    font-size: 1.6rem;
    font-weight: bold;
    margin-top: 1rem;
    margin-bottom: .5rem;
}
h3 {
    font-size: 1.4rem;
    font-weight: normal;
    margin-top: 1rem;
    margin-bottom: 0.5rem;
}
h4 {
    font-size: 1.2rem;
    font-weight: normal;
    margin-top: .5rem;
    margin-bottom: 0;
}
h5,
h6 {
    font-size: 1rem;
    font-weight: bold;
    margin-top: 0;
    margin-bottom: 0;
}

/* Anchor link rules */
a,
a:active,
a:visited {
    color: var(--colour-links);
    display: inline;
    overflow-wrap: break-word;
    overflow-wrap: anywhere;
    text-decoration-color: var(--colour-background-accent);
}
a:hover,
a:focus {
    text-decoration-color: var(--colour-rule-strong);
}

/* Blockquote rules */
blockquote {
    font-style: italic;
    border-left: 1px solid var(--colour-rule-strong);
    margin: .5rem;
    padding: .5rem 1rem;
}
blockquote em {
    font-style: normal;
}

cite {
    font-style: italic;
}

/* Code rules (code literals and Pygments highlighting blocks) */
code,
pre {
    font-family: ui-monospace, "Cascadia Mono", "Segoe UI Mono", "DejaVu Sans Mono", Consolas, monospace;
    font-size: 0.875rem;
    -webkit-hyphens: none;
    hyphens: none;
}
code {
    overflow-wrap: break-word;
    overflow-wrap: anywhere;
}
code.literal {
    font-size: .8em;
    background-color: var(--colour-inline-code);
}
pre {
    overflow-x: auto;
    padding: .5rem .75rem;
    white-space: pre;
}

/* Contents rules */
details > summary {
    cursor: pointer;
    font-size: 1.6rem;
    font-weight: bold;
    margin-bottom: 1em;
}
details > summary:hover {
    text-decoration: underline;
}

/* Definition list rules */
dl dt {
    font-weight: bold;
}
dl dd {
    margin-bottom: 0.5rem;
}

/* Horizontal rule rule */
hr {
    border: 0;
    border-top: 1px solid var(--colour-rule-light);
    margin: 0;
}
/*Image rules */
img {
    max-width: 100%;
}
a img {
    display: block;
    margin: 0 auto;
}

/* List rules */
ul,
ol {
    padding: 0;
    margin: 0 0 0 1.5rem;
}
ul {list-style: square}
ol.arabic {list-style: decimal}
ol.loweralpha {list-style: lower-alpha}
ol.upperalpha {list-style: upper-alpha}
ol.lowerroman {list-style: lower-roman}
ol.upperroman {list-style: upper-roman}

/* Maths rules */
sub,
sup {
    font-size: .75em;
    line-height: 0;
    position: relative;
    vertical-align: baseline;
}
sup {top: -0.5em}
sub {bottom: -0.25em}

/* Table rules */
div.table-wrapper {
    overflow-x: auto;
}
table {
    width: 100%;
    border-collapse: collapse;
    border-top: 1px solid var(--colour-background-accent);
    border-bottom: 1px solid var(--colour-background-accent);
}
table caption {
    margin: 1rem 0 .75rem;
}
table tbody tr:nth-of-type(odd) {
    background-color: var(--colour-background-accent);
}
table th,
table td {
    text-align: left;
    padding: 0.25rem 0.5rem 0.2rem;
}
table tr td.num {
    white-space: nowrap;
}
table td + td {
    border-left: 1px solid var(--colour-rule-light);
}

/* Breadcrumbs rules */
section#pep-page-section > header {
    border-bottom: 1px solid var(--colour-rule-light);
}
section#pep-page-section > header > h1 {
    font-size: 1.1rem;
    line-height: 1.4;
    margin: 0;
    display: inline-block;
    padding-right: .6rem;
    border-right: 1px solid var(--colour-rule-strong);
}
ul.breadcrumbs {
    margin: 0;
    padding: .5rem 0 .5rem .4rem;
    list-style: none;
    display: inline-block;
}
ul.breadcrumbs li {
    display: inline;
}
ul.breadcrumbs a {
    text-decoration: none;
}

/* Dark mode toggle rules */
#colour-scheme-cycler {
    background: transparent;
    border: none;
    padding: 0;
    cursor: pointer;
    width: 1.2rem;
    height: 1.2rem;
    float: right;
    translate: 0 50%;
}
#colour-scheme-cycler svg {
    color: var(--colour-rule-strong);
    height: 1.2rem;
    width: 1.2rem;
    display: none;
}
:root[data-colour_scheme="auto"] #colour-scheme-cycler svg.colour-scheme-icon-when-auto {display: initial}
:root[data-colour_scheme="dark"] #colour-scheme-cycler svg.colour-scheme-icon-when-dark {display: initial}
:root[data-colour_scheme="light"] #colour-scheme-cycler svg.colour-scheme-icon-when-light {display: initial}

/* Admonitions rules */
div.note,
div.warning {
    padding: 0.5rem 0.75rem;
    margin-top: 1rem;
    margin-bottom: 1rem;
}
div.note {
    background-color: var(--colour-background-accent);
}
div.warning {
    background-color: var(--colour-warning);
}
p.admonition-title {
    font-weight: bold;
}

/* PEP Header / references rules */
dl.rfc2822,
dl.footnote {
    display: grid;
    grid-template-columns: fit-content(30%) auto;
    width: 100%;
}
dl.footnote {
    border-top: 1px solid var(--colour-rule-strong);
    line-height: 1.875;
}
dl.rfc2822 > dt,
dl.rfc2822 > dd {
    padding: .1rem .3rem .1rem;
}
dl.footnote > dt,
dl.footnote > dd {
    padding: .25rem .5rem .2rem;
    border-bottom: 1px solid var(--colour-rule-strong);
}
dl.rfc2822 > dt {
    text-align: right;
}
dl.footnote > dt {
    font-weight: normal;
    border-right: 1px solid var(--colour-background);
}
dl.rfc2822 > dd,
dl.footnote > dd {
    margin: 0;
}

/* Sidebar formatting */
#pep-sidebar {
    overflow-y: auto;
    position: sticky;
    top: 0;
    height: 100vh;
}
#pep-sidebar > h2 {
    font-size: 1.4rem;
}
#pep-sidebar ul {
    margin-left: 1rem;
}
#pep-sidebar ul a {
    text-decoration: none;
}
#source {
    padding-bottom: 2rem;
    font-weight: bold;
}

.reference.external > strong {
    font-weight: normal;  /* Fix strong links for :pep: and :rfc: roles */
}