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+/* 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,
+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,
+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;
+}
+
+tr > form:-moz-is-html, tbody > form:-moz-is-html,
+thead > form:-moz-is-html, tfoot > form:-moz-is-html,
+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;
+}
+
+object:-moz-broken > *|* {
+ /*
+ Inherit in the object's alignment so that if we aren't aligned explicitly
+ we'll end up in the right place vertically. See bug 36997. Note that this
+ is not !important because we _might_ be aligned explicitly.
+ */
+ vertical-align: inherit;
+}
+
+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;
+ }
+}
+
+/* Popover UA style, https://html.spec.whatwg.org/#flow-content-3 */
+@media (-moz-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;
+ }
+}