html.css

/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

@namespace url(http://www.w3.org/1999/xhtml); /* set default namespace to HTML */
@namespace xul url(http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul);

@font-face {
  font-family: -moz-bullet-font;
  src: url("data:font/woff2;base64,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");
}

/* bidi */

:-moz-has-dir-attr {
  unicode-bidi: isolate;
}
:-moz-dir-attr-rtl {
  direction: rtl;
}
:-moz-dir-attr-ltr {
  direction: ltr;
}

:-moz-dir-attr-like-auto:dir(ltr) { direction: ltr; }
:-moz-dir-attr-like-auto:dir(rtl) { direction: rtl; }

/* https://html.spec.whatwg.org/#bidi-rendering */
input[type=tel]:dir(ltr) {
  direction: ltr;
}

/* To ensure http://www.w3.org/TR/REC-html40/struct/dirlang.html#style-bidi:
 *
 * "When a block element that does not have a dir attribute is transformed to
 * the style of an inline element by a style sheet, the resulting presentation
 * should be equivalent, in terms of bidirectional formatting, to the
 * formatting obtained by explicitly adding a dir attribute (assigned the
 * inherited value) to the transformed element."
 *
 * and the rules in http://dev.w3.org/html5/spec/rendering.html#rendering
 */

address,
article,
aside,
blockquote,
body,
caption,
center,
col,
colgroup,
dd,
dir,
div,
dl,
dt,
fieldset,
figcaption,
figure,
footer,
form,
h1,
h2,
h3,
h4,
h5,
h6,
header,
hgroup,
hr,
html,
legend,
li,
listing,
main,
marquee,
menu,
nav,
noframes,
ol,
p,
plaintext,
pre,
search,
section,
summary,
table,
tbody,
td,
tfoot,
th,
thead,
tr,
ul,
xmp {
  unicode-bidi: isolate;
}

bdi, output {
  unicode-bidi: isolate;
}
/* We need the "bdo:-moz-has-dir-attr" bit because "bdo" has lower
   specificity than the ":-moz-has-dir-attr" selector above. */
bdo, bdo:-moz-has-dir-attr {
  unicode-bidi: isolate-override;
}
textarea:-moz-dir-attr-like-auto,
pre:-moz-dir-attr-like-auto {
    unicode-bidi: plaintext;
}

/* blocks */

article,
aside,
details,
div,
dt,
figcaption,
footer,
form,
header,
hgroup,
html,
main,
nav,
search,
section,
summary {
  display: block;
}

body {
  display: block;
  margin: 8px;
}

p, dl, multicol {
  display: block;
  margin-block-start: 1em;
  margin-block-end: 1em;
}

dd {
  display: block;
  margin-inline-start: 40px;
}

blockquote, figure {
  display: block;
  margin-block-start: 1em;
  margin-block-end: 1em;
  margin-inline-start: 40px;
  margin-inline-end: 40px;
}

address {
  display: block;
  font-style: italic;
}

center {
  display: block;
  text-align: -moz-center;
}

h1 {
  display: block;
  font-size: 2em;
  font-weight: bold;
  margin-block-start: .67em;
  margin-block-end: .67em;
}

h2,
:is(article, aside, nav, section)
h1 {
  display: block;
  font-size: 1.5em;
  font-weight: bold;
  margin-block-start: .83em;
  margin-block-end: .83em;
}

h3,
:is(article, aside, nav, section)
:is(article, aside, nav, section)
h1 {
  display: block;
  font-size: 1.17em;
  font-weight: bold;
  margin-block-start: 1em;
  margin-block-end: 1em;
}

h4,
:is(article, aside, nav, section)
:is(article, aside, nav, section)
:is(article, aside, nav, section)
h1 {
  display: block;
  font-size: 1.00em;
  font-weight: bold;
  margin-block-start: 1.33em;
  margin-block-end: 1.33em;
}

h5,
:is(article, aside, nav, section)
:is(article, aside, nav, section)
:is(article, aside, nav, section)
:is(article, aside, nav, section)
h1 {
  display: block;
  font-size: 0.83em;
  font-weight: bold;
  margin-block-start: 1.67em;
  margin-block-end: 1.67em;
}

h6,
:is(article, aside, nav, section)
:is(article, aside, nav, section)
:is(article, aside, nav, section)
:is(article, aside, nav, section)
:is(article, aside, nav, section)
h1 {
  display: block;
  font-size: 0.67em;
  font-weight: bold;
  margin-block-start: 2.33em;
  margin-block-end: 2.33em;
}

listing {
  display: block;
  font-family: -moz-fixed;
  font-size: medium;
  white-space: pre;
  margin-block-start: 1em;
  margin-block-end: 1em;
}

xmp, pre, plaintext {
  display: block;
  font-family: -moz-fixed;
  white-space: pre;
  margin-block-start: 1em;
  margin-block-end: 1em;
}

/* tables */

table {
  display: table;
  border-spacing: 2px;
  border-collapse: separate;
  /* XXXldb do we want this if we're border-collapse:collapse ? */
  box-sizing: border-box;
  text-indent: 0;
}

table[align="left"] {
  float: left;
}

table[align="right"] {
  float: right;
  text-align: start;
}


/* border collapse rules */

  /* Set hidden if we have 'frame' or 'rules' attribute.
     Set it on all sides when we do so there's more consistency
     in what authors should expect */

  /* Put this first so 'border' and 'frame' rules can override it. */
table[rules] {
  border-width: thin;
  border-style: hidden;
}

  /* 'border' before 'frame' so 'frame' overrides
      A border with a given value should, of course, pass that value
      as the border-width in pixels -> attr mapping */

  /* :-moz-table-border-nonzero is like [border]:not([border="0"]) except it
     also checks for other zero-like values according to HTML attribute
     parsing rules */
table:-moz-table-border-nonzero {
  border-width: thin;
  border-style: outset;
}

table[frame] {
  border: thin hidden;
}

/* specificity must beat table:-moz-table-border-nonzero rule above */
table[frame="void"]   { border-style: hidden; }
table[frame="above"]  { border-style: outset hidden hidden hidden; }
table[frame="below"]  { border-style: hidden hidden outset hidden; }
table[frame="lhs"]    { border-style: hidden hidden hidden outset; }
table[frame="rhs"]    { border-style: hidden outset hidden hidden; }
table[frame="hsides"] { border-style: outset hidden; }
table[frame="vsides"] { border-style: hidden outset; }
table[frame="box"],
table[frame="border"] { border-style: outset; }


/* Internal Table Borders */

  /* 'border' cell borders first */

table:-moz-table-border-nonzero > * > tr > td,
table:-moz-table-border-nonzero > * > tr > th,
table:-moz-table-border-nonzero > * > td,
table:-moz-table-border-nonzero > * > th,
table:-moz-table-border-nonzero > td,
table:-moz-table-border-nonzero > th
{
  border-width: thin;
  border-style: inset;
}

/* collapse only if rules are really specified */
table[rules]:not([rules="none"], [rules=""]) {
  border-collapse: collapse;
}

/* only specified rules override 'border' settings
  (increased specificity to achieve this) */
table[rules]:not([rules=""])> tr > td,
table[rules]:not([rules=""])> * > tr > td,
table[rules]:not([rules=""])> tr > th,
table[rules]:not([rules=""])> * > tr > th,
table[rules]:not([rules=""])> td,
table[rules]:not([rules=""])> th
{
  border-width: thin;
  border-style: none;
}


table[rules][rules="none"]  > tr > td,
table[rules][rules="none"] > * > tr > td,
table[rules][rules="none"] > tr > th,
table[rules][rules="none"] > * > tr > th,
table[rules][rules="none"] > td,
table[rules][rules="none"] > th
{
  border-width: thin;
  border-style: none;
}

table[rules][rules="all"] > tr > td,
table[rules][rules="all"] > * > tr > td,
table[rules][rules="all"] > tr > th,
table[rules][rules="all"] > * > tr > th,
table[rules][rules="all"] > td,
table[rules][rules="all"] > th
{
  border-width: thin;
  border-style: solid;
}

table[rules][rules="rows"] > tr,
table[rules][rules="rows"] > * > tr {
  border-block-start-width: thin;
  border-block-end-width: thin;
  border-block-start-style: solid;
  border-block-end-style: solid;
}


table[rules][rules="cols"] > tr > td,
table[rules][rules="cols"] > * > tr > td,
table[rules][rules="cols"] > tr > th,
table[rules][rules="cols"] > * > tr > th {
  border-inline-start-width: thin;
  border-inline-end-width: thin;
  border-inline-start-style: solid;
  border-inline-end-style: solid;
}

table[rules][rules="groups"] > colgroup {
  border-inline-start-width: thin;
  border-inline-end-width: thin;
  border-inline-start-style: solid;
  border-inline-end-style: solid;
}
table[rules][rules="groups"] > tfoot,
table[rules][rules="groups"] > thead,
table[rules][rules="groups"] > tbody {
  border-block-start-width: thin;
  border-block-end-width: thin;
  border-block-start-style: solid;
  border-block-end-style: solid;
}


/* caption inherits from table not table-outer */
caption {
  display: table-caption;
  text-align: center;
}

table[align="center"] > caption {
  margin-inline-start: auto;
  margin-inline-end: auto;
}

table[align="center"] > caption[align="left"]:dir(ltr) {
  margin-inline-end: 0;
}
table[align="center"] > caption[align="left"]:dir(rtl) {
  margin-inline-start: 0;
}

table[align="center"] > caption[align="right"]:dir(ltr) {
  margin-inline-start: 0;
}
table[align="center"] > caption[align="right"]:dir(rtl) {
  margin-inline-end: 0;
}

tr {
  display: table-row;
  vertical-align: inherit;
}

col {
  display: table-column;
}

colgroup {
  display: table-column-group;
}

tbody {
  display: table-row-group;
  vertical-align: middle;
}

thead {
  display: table-header-group;
  vertical-align: middle;
}

tfoot {
  display: table-footer-group;
  vertical-align: middle;
}

/* for XHTML tables without tbody */
table > tr {
  vertical-align: middle;
}

td {
  display: table-cell;
  vertical-align: inherit;
  text-align: unset;
  padding: 1px;
}

th {
  display: table-cell;
  vertical-align: inherit;
  font-weight: bold;
  padding: 1px;
  text-align: -moz-center-or-inherit;
}

:is(tr, tbody, thead, tfoot, table) > form:-moz-is-html {
  /* Important: don't show these forms in HTML */
  display: none !important;
}

table[bordercolor] > tbody,
table[bordercolor] > thead,
table[bordercolor] > tfoot,
table[bordercolor] > col,
table[bordercolor] > colgroup,
table[bordercolor] > tr,
table[bordercolor] > * > tr,
table[bordercolor]  > tr > td,
table[bordercolor] > * > tr > td,
table[bordercolor]  > tr > th,
table[bordercolor] > * > tr > th {
  border-color: inherit;
}

/* inlines */

q:before {
  content: open-quote;
}

q:after {
  content: close-quote;
}

b, strong {
  font-weight: bolder;
}

i, cite, em, var, dfn {
  font-style: italic;
}

tt, code, kbd, samp {
  font-family: -moz-fixed;
}

u, ins {
  text-decoration: underline;
}

s, strike, del {
  text-decoration: line-through;
}

big {
  font-size: larger;
}

small {
  font-size: smaller;
}

sub {
  vertical-align: sub;
  font-size: smaller;
}

sup {
  vertical-align: super;
  font-size: smaller;
}

nobr {
  white-space: nowrap;
}

mark {
  background: Mark;
  color: MarkText;
}

/* titles */
abbr[title], acronym[title] {
  text-decoration: dotted underline;
}

/* lists */

ul, menu, dir {
  display: block;
  list-style-type: disc;
  margin-block-start: 1em;
  margin-block-end: 1em;
  padding-inline-start: 40px;
}

ul, ol, menu {
  counter-reset: list-item;
}

ol {
  display: block;
  list-style-type: decimal;
  margin-block-start: 1em;
  margin-block-end: 1em;
  padding-inline-start: 40px;
}

li {
  display: list-item;
  text-align: match-parent;
}

/* nested lists have no top/bottom margins */
:is(ul, ol, dir, menu, dl) ul,
:is(ul, ol, dir, menu, dl) ol,
:is(ul, ol, dir, menu, dl) dir,
:is(ul, ol, dir, menu, dl) menu,
:is(ul, ol, dir, menu, dl) dl {
  margin-block-start: 0;
  margin-block-end: 0;
}

/* 2 deep unordered lists use a circle */
:is(ol, ul, menu, dir) ul,
:is(ol, ul, menu, dir) menu,
:is(ol, ul, menu, dir) dir {
  list-style-type: circle;
}

/* 3 deep (or more) unordered lists use a square */
:is(ol, ul, menu, dir) :is(ol, ul, menu, dir) ul,
:is(ol, ul, menu, dir) :is(ol, ul, menu, dir) menu,
:is(ol, ul, menu, dir) :is(ol, ul, menu, dir) dir {
  list-style-type: square;
}


/* leafs */

/* <hr> noshade and color attributes are handled completely by
 * HTMLHRElement::MapAttributesIntoRule.
 * https://html.spec.whatwg.org/#the-hr-element-2
 */
hr {
  color: gray;
  border-width: 1px;
  border-style: inset;
  margin-block-start: 0.5em;
  margin-block-end: 0.5em;
  margin-inline-start: auto;
  margin-inline-end: auto;
  overflow: hidden;

  /* FIXME: This is not really per spec */
  display: block;
}

hr[size="1"] {
  border-style: solid none none none;
}

/* Note that we only intend for the alt content to show up if the image is
 * broken. But non-broken images/inputs will have a replaced box, and thus we
 * won't we don't generate the pseudo-element anyways. This prevents
 * unnecessary reframing when images become broken / non-broken. */
input[type=image]::before,
img::before {
  content: -moz-alt-content !important;
  unicode-bidi: isolate;
}

img[usemap], object[usemap] {
  color: blue;
}

frameset {
  display: block ! important;
  overflow: clip;
  position: static ! important;
  float: none ! important;
  border: none ! important;
}

frame {
  border-radius: 0 ! important;
}

iframe {
  border: 2px inset;
}

spacer {
  position: static ! important;
  float: none ! important;
}

canvas {
  user-select: none;
}

iframe:focus-visible,
body:focus-visible,
html:focus-visible {
  /* These elements historically don't show outlines when focused by default.
   * We could consider changing that if needed. */
  outline-style: none;
}

/* hidden elements: https://html.spec.whatwg.org/#hidden-elements
 *
 * Exceptions:
 *
 *  * area declaration needs to be !important, see below / bug 135040.  That's
 *    hacky and broken.
 *
 *  * [hidden] is implemented as a presentation attribute to avoid a global
 *    selector in a UA sheet.
 */
base, basefont, datalist, head, link, meta, noembed,
noframes, param, rp, script, style, template, title {
   display: none;
}

area {
  /* Don't give it frames other than its imageframe */
  display: none ! important;
}

iframe:fullscreen {
  /* iframes in full-screen mode don't show a border. */
  border: none !important;
  padding: unset !important;
}

/* Details and summary
 * https://html.spec.whatwg.org/#the-details-and-summary-elements
 *
 * Note that these rules need to be duplicated in details.css for the anonymous
 * summary, which wouldn't match otherwise.
 *
 * The spec here says something different, see
 * https://github.com/whatwg/html/issues/8610
 */
details > summary:first-of-type {
  display: list-item;
  counter-increment: list-item 0;
  list-style: disclosure-closed inside;
}
details[open] > summary:first-of-type {
  list-style-type: disclosure-open;
}

/* media elements */
video {
  object-fit: contain;
}

video > img:-moz-native-anonymous {
  /* Video poster images should render with the video element's "object-fit" &
     "object-position" properties */
  object-fit: inherit !important;
  object-position: inherit !important;
}

audio:not([controls]) {
  display: none !important;
}

audio[controls] {
  /* This ensures that intrinsic sizing can reliably shrinkwrap our
      controls (which are also always horizontal) and produce a
      reasonable intrinsic size from them. */
  writing-mode: horizontal-tb !important;
}

*|*::-moz-html-canvas-content {
  display: block !important;
  /* we want to be an absolute and fixed container */
  transform: translate(0) !important;
}

video > .caption-box {
  width: 100%;
  height: 100%;
  position: relative;
}

/**
 * The pseudo element won't inherit CSS styles from its direct parent, `::cue`
 * would actually inherit styles from video because it's video's pseudo element.
 * Therefore, we have to explicitly set some styles which are already defined
 * in its parent element in vtt.jsm.
 */
::cue {
  color: rgba(255, 255, 255, 1);
  white-space: pre-line;
  background-color: rgba(0, 0, 0, 0.8);
  font: 10px sans-serif;
  font-size: var(--cue-font-size);
  writing-mode: var(--cue-writing-mode, inherit);
  overflow-wrap: break-word;
  /* TODO : enable unicode-bidi, right now enable it would cause incorrect
            display direction, maybe related with bug 1558431. */
}

/* <dialog> element styles */

dialog {
  position: absolute;
  display: block;
  inset-inline-start: 0;
  inset-inline-end: 0;
  margin: auto;
  border-width: initial;
  border-style: solid;
  border-color: initial;
  border-image: initial;
  padding: 1em;
  background-color: Canvas;
  color: CanvasText;
  width: -moz-fit-content;
  height: -moz-fit-content;
}

dialog:not([open]) {
  display: none;
}

dialog:modal {
  -moz-top-layer: top !important;
  position: fixed;
  overflow: auto;
  visibility: visible;
  inset-block-start: 0;
  inset-block-end: 0;
  max-width: calc(100% - 6px - 2em);
  max-height: calc(100% - 6px - 2em);
}

/* https://html.spec.whatwg.org/#flow-content-3 */
dialog::backdrop {
  background: rgba(0, 0, 0, 0.1);
}

marquee {
  inline-size: -moz-available;
  display: inline-block;
  vertical-align: text-bottom;
  text-align: start;
}

marquee:is([direction="up"], [direction="down"]) {
  block-size: 200px;
}

/* Ruby */

ruby {
  display: ruby;
}
rb {
  display: ruby-base;
  white-space: nowrap;
}
rt {
  display: ruby-text;
}
rtc {
  display: ruby-text-container;
}
rtc, rt {
  white-space: nowrap;
  font-size: 50%;
  -moz-min-font-size-ratio: 50%;
  line-height: 1;
}
@media not (-moz-platform: windows) {
  rtc, rt {
    /* The widely-used Windows font Meiryo doesn't work fine with this
    * setting, so disable this on Windows. We should re-enable it once
    * Microsoft fixes this issue. See bug 1164279. */
    font-variant-east-asian: ruby;
  }
}
rtc, rt {
  text-emphasis: none;
}
rtc:lang(zh), rt:lang(zh) {
  ruby-align: center;
}
rtc:lang(zh-TW), rt:lang(zh-TW) {
  font-size: 30%; /* bopomofo */
  -moz-min-font-size-ratio: 30%;
}
rtc > rt {
  font-size: unset;
}
ruby, rb, rt, rtc {
  unicode-bidi: isolate;
}

/* Shadow DOM v1
 * https://drafts.csswg.org/css-scoping/#slots-in-shadow-tree */
slot {
  display: contents;
}

/* Un-invert images and videos for users using inverted colors.
 * "User agents must add the following rule to their UA style sheet"
 * https://www.w3.org/TR/mediaqueries-5/#inverted
 */
@media (inverted-colors) {
  img:not(picture > img), picture, video {
    filter: invert(100%);
  }
}

/* Hide noscript elements if scripting is enabled */
@media (scripting) {
  noscript {
    display: none !important;
  }
}

@media print {
  input, textarea, select, button, details {
    -moz-user-input: none !important;
    pointer-events: none !important;
  }
}

/* Popover UA style, https://html.spec.whatwg.org/#flow-content-3 */
/* stylelint-disable-next-line media-query-no-invalid */
@media (-moz-bool-pref: "dom.element.popover.enabled") {
  [popover]:not(:popover-open):not(dialog[open]) {
    display:none;
  }

  dialog:popover-open {
    display:block;
  }

  [popover] {
    position: fixed;
    inset: 0;
    width: fit-content;
    height: fit-content;
    margin: auto;
    border: solid;
    padding: 0.25em;
    overflow: auto;
    color: CanvasText;
    background-color: Canvas;
  }

  :popover-open {
    -moz-top-layer: top;
  }

  :popover-open::backdrop {
    position: fixed;
    inset: 0;
    pointer-events: none !important;
    background-color: transparent;
  }
}