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v3.css
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@font-face {
font-family: 'Lora';
font-style: italic;
font-weight: 400;
font-display: swap;
src: local('Lora Italic'), local('Lora-Italic'), url('https://martinthomson.github.io/rfc-css/fonts/lora-italic-cyrillic-ext.woff2') format('woff2');
unicode-range: U+0460-052F, U+1C80-1C88, U+20B4, U+2DE0-2DFF, U+A640-A69F, U+FE2E-FE2F;
}
@font-face {
font-family: 'Lora';
font-style: italic;
font-weight: 400;
font-display: swap;
src: local('Lora Italic'), local('Lora-Italic'), url('https://martinthomson.github.io/rfc-css/fonts/lora-italic-cyrillic-ext.woff2') format('woff2');
unicode-range: U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116;
}
@font-face {
font-family: 'Lora';
font-style: italic;
font-weight: 400;
font-display: swap;
src: local('Lora Italic'), local('Lora-Italic'), url('https://martinthomson.github.io/rfc-css/fonts/lora-italic-vietnamese.woff2') format('woff2');
unicode-range: U+0102-0103, U+0110-0111, U+1EA0-1EF9, U+20AB;
}
@font-face {
font-family: 'Lora';
font-style: italic;
font-weight: 400;
font-display: swap;
src: local('Lora Italic'), local('Lora-Italic'), url('https://martinthomson.github.io/rfc-css/fonts/lora-italic-latin-ext.woff2') format('woff2');
unicode-range: U+0100-024F, U+0259, U+1E00-1EFF, U+2020, U+20A0-20AB, U+20AD-20CF, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
font-family: 'Lora';
font-style: italic;
font-weight: 400;
font-display: swap;
src: local('Lora Italic'), local('Lora-Italic'), url('https://martinthomson.github.io/rfc-css/fonts/lora-italic-latin.woff2') format('woff2');
unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+2074, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
font-family: 'Lora';
font-style: normal;
font-weight: 400;
font-display: swap;
src: local('Lora Regular'), local('Lora-Regular'), url('https://martinthomson.github.io/rfc-css/fonts/lora-regular-cyrillic-ext.woff2') format('woff2');
unicode-range: U+0460-052F, U+1C80-1C88, U+20B4, U+2DE0-2DFF, U+A640-A69F, U+FE2E-FE2F;
}
@font-face {
font-family: 'Lora';
font-style: normal;
font-weight: 400;
font-display: swap;
src: local('Lora Regular'), local('Lora-Regular'), url('https://martinthomson.github.io/rfc-css/fonts/lora-regular-cyrillic.woff2') format('woff2');
unicode-range: U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116;
}
@font-face {
font-family: 'Lora';
font-style: normal;
font-weight: 400;
font-display: swap;
src: local('Lora Regular'), local('Lora-Regular'), url('https://martinthomson.github.io/rfc-css/fonts/lora-regular-vietnamese.woff2') format('woff2');
unicode-range: U+0102-0103, U+0110-0111, U+1EA0-1EF9, U+20AB;
}
@font-face {
font-family: 'Lora';
font-style: normal;
font-weight: 400;
font-display: swap;
src: local('Lora Regular'), local('Lora-Regular'), url('https://martinthomson.github.io/rfc-css/fonts/lora-regular-latin-ext.woff2') format('woff2');
unicode-range: U+0100-024F, U+0259, U+1E00-1EFF, U+2020, U+20A0-20AB, U+20AD-20CF, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
font-family: 'Lora';
font-style: normal;
font-weight: 400;
font-display: swap;
src: local('Lora Regular'), local('Lora-Regular'), url('https://martinthomson.github.io/rfc-css/fonts/lora-regular-latin.woff2') format('woff2');
unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+2074, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
font-family: 'Lora';
font-style: normal;
font-weight: 700;
font-display: swap;
src: local('Lora Bold'), local('Lora-Bold'), url('https://martinthomson.github.io/rfc-css/fonts/lora-bold-cyrillic-ext.woff2') format('woff2');
unicode-range: U+0460-052F, U+1C80-1C88, U+20B4, U+2DE0-2DFF, U+A640-A69F, U+FE2E-FE2F;
}
@font-face {
font-family: 'Lora';
font-style: normal;
font-weight: 700;
font-display: swap;
src: local('Lora Bold'), local('Lora-Bold'), url('https://martinthomson.github.io/rfc-css/fonts/lora-bold-cyrillic.woff2') format('woff2');
unicode-range: U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116;
}
@font-face {
font-family: 'Lora';
font-style: normal;
font-weight: 700;
font-display: swap;
src: local('Lora Bold'), local('Lora-Bold'), url('https://martinthomson.github.io/rfc-css/fonts/lora-bold-vietnamese.woff2') format('woff2');
unicode-range: U+0102-0103, U+0110-0111, U+1EA0-1EF9, U+20AB;
}
@font-face {
font-family: 'Lora';
font-style: normal;
font-weight: 700;
font-display: swap;
src: local('Lora Bold'), local('Lora-Bold'), url('https://martinthomson.github.io/rfc-css/fonts/lora-bold-latin-ext.woff2') format('woff2');
unicode-range: U+0100-024F, U+0259, U+1E00-1EFF, U+2020, U+20A0-20AB, U+20AD-20CF, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
font-family: 'Lora';
font-style: normal;
font-weight: 700;
font-display: swap;
src: local('Lora Bold'), local('Lora-Bold'), url('https://martinthomson.github.io/rfc-css/fonts/lora-bold-latin.woff2') format('woff2');
unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+2074, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
font-family: 'Lora';
font-style: normal;
font-weight: 600;
font-display: swap;
src: local('Lora SemiBold'), local('Lora-SemiBold'), url('https://martinthomson.github.io/rfc-css/fonts/lora-semibold-latin.woff2') format('woff2');
unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+2074, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
font-family: 'Oxygen Mono';
font-style: normal;
font-weight: 400;
font-display: swap;
src: local('Oxygen Mono'), local('OxygenMono-Regular'), url('https://martinthomson.github.io/rfc-css/fonts/oxygenmono-regular-latin-ext.woff2') format('woff2');
unicode-range: U+0100-024F, U+0259, U+1E00-1EFF, U+2020, U+20A0-20AB, U+20AD-20CF, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
font-family: 'Oxygen Mono';
font-style: normal;
font-weight: 400;
font-display: swap;
src: local('Oxygen Mono'), local('OxygenMono-Regular'), url('https://martinthomson.github.io/rfc-css/fonts/oxygenmono-regular-latin.woff2') format('woff2');
unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+2074, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
font-family: 'Sofia Sans Semi Condensed';
font-style: italic;
font-weight: 1 1000;
src: url('https://martinthomson.github.io/rfc-css/fonts/sofiasanssemicondensed-italic-cyrillic-ext.woff2') format('woff2');
unicode-range: U+0460-052F, U+1C80-1C8A, U+20B4, U+2DE0-2DFF, U+A640-A69F, U+FE2E-FE2F;
}
@font-face {
font-family: 'Sofia Sans Semi Condensed';
font-style: italic;
font-weight: 1 1000;
src: url('https://martinthomson.github.io/rfc-css/fonts/sofiasanssemicondensed-italic-cyrillic.woff2') format('woff2');
unicode-range: U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116;
}
@font-face {
font-family: 'Sofia Sans Semi Condensed';
font-style: italic;
font-weight: 1 1000;
src: url('https://martinthomson.github.io/rfc-css/fonts/sofiasanssemicondensed-italic-greek.woff2') format('woff2');
unicode-range: U+0370-0377, U+037A-037F, U+0384-038A, U+038C, U+038E-03A1, U+03A3-03FF;
}
@font-face {
font-family: 'Sofia Sans Semi Condensed';
font-style: italic;
font-weight: 1 1000;
src: url('https://martinthomson.github.io/rfc-css/fonts/sofiasanssemicondensed-italic-latin-ext.woff2') format('woff2');
unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
font-family: 'Sofia Sans Semi Condensed';
font-style: italic;
font-weight: 1 1000;
src: url('https://martinthomson.github.io/rfc-css/fonts/sofiasanssemicondensed-italic-latin.woff2') format('woff2');
unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
font-family: 'Sofia Sans Semi Condensed';
font-style: normal;
font-weight: 1 1000;
src: url('https://martinthomson.github.io/rfc-css/fonts/sofiasanssemicondensed-regular-cyrillic-ext.woff2') format('woff2');
unicode-range: U+0460-052F, U+1C80-1C8A, U+20B4, U+2DE0-2DFF, U+A640-A69F, U+FE2E-FE2F;
}
@font-face {
font-family: 'Sofia Sans Semi Condensed';
font-style: normal;
font-weight: 1 1000;
src: url('https://martinthomson.github.io/rfc-css/fonts/sofiasanssemicondensed-regular-cyrillic.woff2') format('woff2');
unicode-range: U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116;
}
@font-face {
font-family: 'Sofia Sans Semi Condensed';
font-style: normal;
font-weight: 1 1000;
src: url('https://martinthomson.github.io/rfc-css/fonts/sofiasanssemicondensed-regular-greek.woff2') format('woff2');
unicode-range: U+0370-0377, U+037A-037F, U+0384-038A, U+038C, U+038E-03A1, U+03A3-03FF;
}
@font-face {
font-family: 'Sofia Sans Semi Condensed';
font-style: normal;
font-weight: 1 1000;
src: url('https://martinthomson.github.io/rfc-css/fonts/sofiasanssemicondensed-regular-latin-ext.woff2') format('woff2');
unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
font-family: 'Sofia Sans Semi Condensed';
font-style: normal;
font-weight: 1 1000;
src: url('https://martinthomson.github.io/rfc-css/fonts/sofiasanssemicondensed-regular-latin.woff2') format('woff2');
unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
:root {
color-scheme: light dark;
--background-color: #fff;
--text-color: #222;
--title-color: #191919;
--link-color: #2a6496;
--highlight-color: #f9f9f9;
--line-color: #eee;
--pilcrow-weak: #ddd;
--pilcrow-strong: #bbb;
--small-font-size: 14.5px;
--font-mono: 'Oxygen Mono', monospace;
--font-title: "Sofia Sans Semi Condensed", sans-serif;
scrollbar-color: #bbb #eee;
}
body {
max-width: 600px;
margin: 75px auto;
padding: 0 5px;
color: var(--text-color);
background-color: var(--background-color);
font: 16px/22px "Lora", serif;
scroll-behavior: smooth;
}
.ears {
display: none;
}
/* headings */
section {
clear: both;
}
.section-number {
padding-right: 0.5em;
}
h1, h2, h3, h4, h5, h6 {
font-family: var(--font-title);
font-weight: 680;
margin: 0.8em 0 0.3em;
font-size-adjust: 0.5;
color: var(--title-color);
}
h1#title {
font-size: 32px;
line-height: 40px;
clear: both;
}
h1#title, h1#rfcnum {
margin: 1.5em 0 0.2em;
}
h1#rfcnum + h1#title {
margin: 0.2em 0;
}
h1, h2, h3 {
font-size: 22px;
line-height: 27px;
}
h4, h5, h6 {
font-size: 20px;
line-height: 24px;
}
/* general structure */
.author {
padding-bottom: 0.3em;
vertical-align: top;
}
#abstract+p {
font-size: 18px;
line-height: 24px;
}
#abstract+p code, #abstract+p samp, #abstract+p tt {
font-size: 16px;
line-height: 0;
}
p {
padding: 0;
margin: 0.5em 0;
text-align: left;
}
div {
margin: 0;
}
.alignRight.art-text {
background-color: var(--highlight-color);
border: 1px solid var(--line-color);
border-radius: 3px;
padding: 0.5em 1em 0;
margin-bottom: 0.5em;
}
.alignRight.art-text pre {
padding: 0;
width: auto;
}
.alignRight {
margin: 1em 0;
}
.alignRight > *:first-child {
border: none;
margin: 0;
float: right;
clear: both;
}
.alignRight > *:nth-child(2) {
clear: both;
display: block;
border: none;
}
svg {
display: block;
}
/* font-family isn't space-separated, but =~ will have to do */
svg[font-family~="monospace" i], svg [font-family~="monospace" i] {
font-family: var(--font-mono);
}
.alignCenter.art-text {
background-color: var(--highlight-color);
border: 1px solid var(--line-color);
border-radius: 3px;
padding: 0.5em 1em 0;
margin-bottom: 0.5em;
}
.alignCenter.art-text pre {
padding: 0;
width: auto;
}
.alignCenter {
margin: 1em 0;
}
.alignCenter > *:first-child {
border: none;
/* this isn't optimal, but it's an existence proof. PrinceXML doesn't
support flexbox yet.
*/
display: table;
margin: 0 auto;
}
/* lists */
ol, ul {
padding: 0;
margin: 0 0 0.5em 2em;
& :is(ol, ul) {
margin-left: 1em;
}
}
li {
margin: 0 0 0.25em 0;
}
ul.empty, .ulEmpty {
list-style-type: none;
& li {
margin-top: 0.5em;
}
}
:is(ul, ol).compact, .ulCompact, .olCompact {
margin: 0 0 0 2em;
& li {
margin: 0;
& :first-child { margin-top: 0; }
& :last-child { margin-bottom: 0; }
}
}
/* definition lists */
dl {
clear: left;
--indent: 3ch;
/* --indent: attr(indent ch); not supported in any browser, but we can dream */
&.olPercent {
--indent: 5ch;
& > dt {
min-width: calc(var(--indent) - 2ch);
}
}
&.olPercent > dt {
float: none;
}
dl > dd > & {
margin-top: 0.5em;
margin-bottom: 0;
}
}
dl > dt {
float: left;
margin-right: 2ch;
min-width: 8ch;
}
dl > dd {
margin-bottom: .8em;
margin-left: var(--indent) !important; /* stupid element overrides */
min-height: 2ex;
}
:is(dl.compact, .dlCompact) > dd {
margin-bottom: 0;
& > :is(:first-child, .break:first-child + *) {
margin-top: 0;
}
& > :is(:last-child) {
margin-bottom: 0;
}
}
:is(dd, span).break {
display: none;
}
/* links */
a, a[href].selfRef:hover {
text-decoration: none;
}
a[href] {
color: var(--link-color);
}
a[href].selfRef, .iref + a[href].internal {
color: var(--text-color);
}
a[href]:hover {
text-decoration: underline;
}
a[href].selfRef:hover {
background-color: var(--highlight-color);
}
a.xref:is(.cite, .auto), :is(#status-of-memo, #copyright) a {
white-space: nowrap;
}
/* Figures */
tt, code, pre {
background-color: var(--highlight-color);
font: 14px/22px var(--font-mono);
}
tt, code {
/* changing the font for inline elements leads to different ascender
and descender heights; as we want to retain baseline alignment,
remove leading to avoid altering the final height of lines
note: this fails if these blocks take an entire line,
a different solution would be great */
line-height: 0;
}
:is(h1, h2, h3, h4, h5, h6) :is(tt, code) {
font-size: 84%;
}
pre {
border: 1px solid var(--line-color);
font-size: 13.5px;
line-height: 16px;
letter-spacing: -0.2px;
margin: 5px;
padding: 5px;
}
img {
max-width: 100%;
}
figure {
margin: 0.5em 0;
padding: 0;
}
figure blockquote {
margin: 0.8em 0.4em 0.4em;
}
figcaption, caption {
font-style: italic;
margin: 0.5em 1.5em;
text-align: left;
caption-side: bottom;
}
@media screen {
/* Auto-collapse boilerplate. */
:is(#status-of-memo, #copyright) p {
margin: -2px 0;
max-height: 0;
transition: max-height 2s ease, margin 0.5s ease 0.5s;
overflow: hidden;
}
:is(#status-of-memo, #copyright):hover p,
:is(#status-of-memo, #copyright) h2:target ~ p {
margin: 0.5em 0;
max-height: 500px;
overflow: auto;
}
pre, svg {
display: inline-block;
/* In the horizontal direction, sometimes people make over-sized figures.
Scrollbars for those is therefore necessary: auto adds them as necessary..
In the vertical direction, the line-height can combine with the font
asender/descender height to produce scrollbars: hidden avoids that. */
overflow: auto hidden;
}
pre {
max-width: 100%;
width: calc(100% - 22px - 1em);
}
svg {
max-width: calc(100% - 22px - 1em);
}
figure pre {
display: block;
width: calc(100% - 25px);
}
:is(pre, svg) + .pilcrow {
display: inline-block;
vertical-align: text-bottom;
padding-bottom: 8px;
}
}
/* aside, blockquote */
aside, blockquote {
margin-left: 0;
padding: 0 2em;
font-style: italic;
}
blockquote {
margin: 1em 0;
}
cite {
display: block;
text-align: right;
font-style: italic;
}
/* tables */
table {
width: auto;
max-width: 100%;
margin: 0 0 1em;
border-collapse: collapse;
}
table.right {
margin-left: auto;
}
table.center {
margin-left: auto;
margin-right: auto;
}
table.left {
margin-right: auto;
}
table .text-left {
text-align: left;
}
table .text-center {
text-align: center;
}
table .text-right {
text-align: right;
}
thead, tbody {
border: 1px solid var(--line-color);
}
th, td {
text-align: left;
vertical-align: top;
padding: 5px 10px;
}
th {
background-color: var(--line-color);
}
:is(tr:nth-child(2n), thead+tbody > tr:nth-child(2n+1)) > td {
background-color: var(--background-color);
}
:is(tr:nth-child(2n+1), thead+tbody > tr:nth-child(2n)) > td {
background-color: var(--highlight-color);
}
table caption {
margin: 0;
padding: 3px 0 3px 1em;
}
table p {
margin: 0;
}
/* pilcrow */
a.pilcrow {
margin-left: 3px;
opacity: 0.2;
user-select: none;
&[href] {
color: var(--pilcrow-weak);
&:hover { text-decoration: none; }
}
}
@media not print {
:hover > a.pilcrow {
opacity: 1;
}
a.pilcrow[href]:hover {
color: var(--pilcrow-strong);
background-color: transparent;
}
}
@media print {
a.pilcrow {
display: none;
}
}
/* misc */
hr {
border: 0;
border-top: 1px solid var(--line-color);
}
.bcp14 {
font-variant: small-caps;
font-weight: 600;
font-size: var(--small-font-size);
}
.role {
font-variant: all-small-caps;
}
sub, sup {
line-height: 1;
font-size: 80%;
}
/* info block */
#identifiers {
margin: 0;
font-size: var(--small-font-size);
line-height: 18px;
--identifier-width: 15ch;
& dt {
width: var(--identifier-width);
min-width: var(--identifier-width);
clear: left;
float: left;
text-align: right;
margin-right: 1ch;
}
& dd {
margin: 0;
margin-left: calc(1em + var(--identifier-width)) !important;
min-width: 5em;
}
& .authors {
& .author {
display: inline-block;
margin-right: 1.5em;
}
& .org {
font-style: italic;
}
}
}
/* The prepared/rendered info at the very bottom of the page */
.docInfo {
color: #999;
font-size: 0.9em;
font-style: italic;
margin-top: 2em;
}
.docInfo .prepared {
float: right;
}
/* table of contents */
#toc {
padding: 0.75em 0 2em 0;
margin-bottom: 1em;
& nav {
& ul {
margin: 0 0.5em 0 0;
padding: 0;
list-style: none;
}
& li {
line-height: 1.3em;
margin: 2px 0;
padding-left: 1.2em;
text-indent: -1.2em;
}
}
& a.xref {
white-space: normal;
}
}
.references {
& > dt {
text-align: right;
font-weight: bold;
min-width: 10ch;
margin-right: 1.5ch;
&:target::before {
content: "⇒";
margin: 0 10px 0 -25px;
}
}
& > dd {
margin-left: 12ch !important;
overflow: visible;
& .refInstance {
margin-bottom: 0.8em;
}
& .ascii {
margin-bottom: 0.25em;
}
}
}
#rfc\.index\.index + ul {
margin-left: 0;
}
/* authors */
address.vcard {
font-style: normal;
max-width: 20em;
margin: 1em auto 1em 0;
& .nameRole {
font-weight: 700;
margin-left: 0;
}
& .label {
margin: 0.5em 0;
}
& .type {
display: none;
}
& .alternative-contact {
margin: 0.5em 0 0.25em 0;
}
& .non-ascii {
margin: 0 0 0 2em;
}
& div.left {
text-align: left;
}
& div.right {
text-align: right;
}
}
hr.addr {
border-top: 1px dashed;
margin: 0;
color: #ddd;
max-width: calc(100% - 16px);
}
@media (min-width: 500px) {
#authors-addresses > section {
column-count: 2;
column-gap: 20px;
}
#authors-addresses > section > h2 {
column-span: all;
}
/* hack for break-inside: avoid-column */
#authors-addresses address {
display: inline-block;
break-inside: avoid-column;
}
}
/* Comments */
.rfcEditorRemove p:first-of-type {
font-style: italic;
}
.cref {
background-color: rgba(249, 232, 105, 0.3);
padding: 2px 4px;
}
.crefSource {
font-style: italic;
}
@media screen {
#toc nav {
font-family: var(--font-title);
font-weight: 360;
& > ul { margin-bottom: 2em; }
& ul {
margin: 0 0 0 4px;
& :is(p, li) {
margin: 2px 0;
}
}
}
#toc a.toplink {
float: right;
}
}
@media not screen {
#toc a.toplink {
display: none;
}
}
/* TOC layout for smaller screens */
@media screen and (max-width: 929px) {
#toc {
position: fixed;
z-index: 2;
top: 0;
right: 0;
padding: 1px 0 0 0;
margin: 0;
border-bottom: 1px solid #ccc;
opacity: 0.6;
}
#toc h2 {
margin: 0;
padding: 2px 0 2px 6px;
padding-right: 1em;
font-size: 18px;
line-height: 24px;
min-width: 190px;
text-align: right;
background-color: #444;
color: white;
cursor: pointer;
&::before { /* css hamburger */
float: right;
position: relative;
width: 1em;
height: 1px;
left: -164px;
margin: 8px 0 0 0;
background: white none repeat scroll 0 0;
box-shadow: 0 4px 0 0 white, 0 8px 0 0 white;
content: "";
}
}
#toc nav {
display: none;
background-color: var(--background-color);
padding: 0.5em 1em 1em;
overflow: auto;
overscroll-behavior: contain;
height: calc(100vh - 48px);
border-left: 1px solid #ddd;
}
#toc.active {
opacity: 1;
& nav { display: block; }
}
/* Make the collapsed ToC header render white on gray also when it's a link */
#toc h2 a,
#toc h2 a:is(:link, :focus, :hover),
#toc a.toplink,
#toc a.toplink:hover {
color: white;
background-color: #444;
text-decoration: none;
}
#toc a.toplink {
margin: 2px 0.5em 0;
}
}
/* TOC layout for wide screens */
@media screen and (min-width: 930px) {
body {
padding-right: 360px;
padding-right: calc(min(180px + 20%, 500px));
}
#toc {
position: fixed;
bottom: 0;
right: 0;
right: calc(50vw - 480px);
width: 312px;
margin: 0;
padding: 0;
z-index: 1;
}
#toc h2 {
margin: 0;
padding: 0.25em 1em 1em 0;
}
#toc nav {
display: block;
height: calc(90vh - 84px);
bottom: 0;
padding: 0.5em 0 2em;
overflow: auto;
overscroll-behavior: contain;
scrollbar-width: thin;
}
img { /* future proofing */
max-width: 100%;
height: auto;
}
#toc a.toplink {
margin: 8px 0.5em 0;
}
}
/* pagination */
@media print {
body {
width: 100%;
}
p {
orphans: 3;
widows: 3;
}
#n-copyright-notice {
border-bottom: none;
}
#toc, #n-introduction {
page-break-before: always;
}
#toc {
border-top: none;
padding-top: 0;
}
figure, pre, .vcard {
page-break-inside: avoid;
}
h1, h2, h3, h4, h5, h6 {
page-break-after: avoid;
}
:is(h2, h3, h4, h5, h6)+*, dd {
page-break-before: avoid;
}
pre {
white-space: pre-wrap;
word-wrap: break-word;
font-size: 10pt;
}
table {
border: 1px solid #ddd;
}
td {
border-top: 1px solid #ddd;
}
}
@page :first {
padding-top: 0;
@top-left {
content: normal;
border: none;
}
@top-center {
content: normal;
border: none;
}
@top-right {
content: normal;
border: none;
}
}
@page {
size: A4;
margin-bottom: 45mm;
padding-top: 20px;
}
/* Dark mode. */
@media (prefers-color-scheme: dark) {
:root {
--background-color: #121212;
--text-color: #f0f0f0;
--title-color: #fff;
--link-color: #4da4f0;
--highlight-color: #282828;
--line-color: #444;
--pilcrow-weak: #444;
--pilcrow-strong: #666;
scrollbar-color: #777 #333;
}
}
/* SVG Trick: a prefix match works because only black and white are allowed */
svg :is([stroke="black"], [stroke^="#000"]) {
stroke: var(--text-color);
}
svg :is([stroke="white"], [stroke^="#fff"]) {
stroke: var(--background-color);