jsdom/lib/jsdom/browser/default-stylesheet.css

A JavaScript implementation of many web standards

/* Omitting the below because of https://github.com/jsdom/cssstyle/issues/193.
   And we don't implement namespace constraints anyway.

@namespace "http://www.w3.org/1999/xhtml";
*/

/* https://html.spec.whatwg.org/multipage/rendering.html#the-page */

html, body { display: block; }

/* https://html.spec.whatwg.org/multipage/rendering.html#flow-content-3
  - Omits presentational hints
  - Omits quirks mode
*/

address, blockquote, center, dialog, div, figure, figcaption, footer, form,
header, hr, legend, listing, main, p, plaintext, pre, search, xmp {
  display: block;
}

blockquote, figure, listing, p, plaintext, pre, xmp {
  margin-block: 1em;
}

blockquote, figure { margin-inline: 40px; }

address { font-style: italic; }
listing, plaintext, pre, xmp {
  font-family: monospace; white-space: pre;
}

dialog:not([open]) { display: none; }
dialog {
  position: absolute;
  inset-inline-start: 0; inset-inline-end: 0;
  width: fit-content;
  height: fit-content;
  margin: auto;
  border: solid;
  padding: 1em;
  background-color: Canvas;
  color: CanvasText;
}
dialog:modal {
  position: fixed;
  overflow: auto;
  inset-block: 0;
  max-width: calc(100% - 6px - 2em);
  max-height: calc(100% - 6px - 2em);
}
dialog::backdrop {
  background: rgba(0,0,0,0.1);
}

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

slot {
  display: contents;
}

/* https://html.spec.whatwg.org/multipage/rendering.html#phrasing-content-3
  - Omits presentational hints
*/


cite, dfn, em, i, var { font-style: italic; }
b, strong { font-weight: bolder; }
code, kbd, samp, tt { font-family: monospace; }
big { font-size: larger; }
small { font-size: smaller; }

sub { vertical-align: sub; }
sup { vertical-align: super; }
sub, sup { line-height: normal; font-size: smaller; }

ruby { display: ruby; }
rt { display: ruby-text; }

:link { color: #0000EE; }
:visited { color: #551A8B; }
:link:active, :visited:active { color: #FF0000; }
:link, :visited { text-decoration: underline; cursor: pointer; }

:focus-visible { outline: auto; }

mark { background: yellow; color: black; } /* this color is just a suggestion and can be changed based on implementation feedback */

abbr[title], acronym[title] { text-decoration: dotted underline; }
ins, u { text-decoration: underline; }
del, s, strike { text-decoration: line-through; }

q::before { content: open-quote; }
q::after { content: close-quote; }

br { display-outside: newline; } /* this also has bidi implications */
nobr { white-space: nowrap; }
wbr { display-outside: break-opportunity; } /* this also has bidi implications */
nobr wbr { white-space: normal; }

/* https://html.spec.whatwg.org/multipage/rendering.html#bidi-rendering
  - Omits ISO-8859-8
*/

[dir]:dir(ltr), bdi:dir(ltr), input[type=tel i]:dir(ltr) { direction: ltr; }
[dir]:dir(rtl), bdi:dir(rtl) { direction: rtl; }

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

bdo, bdo[dir] { unicode-bidi: isolate-override; }

input[dir=auto i]:is([type=search i], [type=tel i], [type=url i],
[type=email i]), textarea[dir=auto i], pre[dir=auto i] {
  unicode-bidi: plaintext;
}
/* see prose for input elements whose type attribute is in the Text state */

/* the rules setting the 'content' property on br and wbr elements also has bidi implications */

/* https://html.spec.whatwg.org/multipage/rendering.html#sections-and-headings
  - Special h1 styles removed per upcoming change: https://github.com/whatwg/html/pull/11102
*/

article, aside, h1, h2, h3, h4, h5, h6, hgroup, nav, section {
  display: block;
}

h1 { margin-block: 0.67em; font-size: 2.00em; font-weight: bold; }
h2 { margin-block: 0.83em; font-size: 1.50em; font-weight: bold; }
h3 { margin-block: 1.00em; font-size: 1.17em; font-weight: bold; }
h4 { margin-block: 1.33em; font-size: 1.00em; font-weight: bold; }
h5 { margin-block: 1.67em; font-size: 0.83em; font-weight: bold; }
h6 { margin-block: 2.33em; font-size: 0.67em; font-weight: bold; }

/* https://html.spec.whatwg.org/multipage/rendering.html#lists
  - Omit presentational hints
  - Omit quirks mode
*/

dir, dd, dl, dt, menu, ol, ul { display: block; }
li { display: list-item; text-align: match-parent; }

dir, dl, menu, ol, ul { margin-block: 1em; }

:is(dir, dl, menu, ol, ul) :is(dir, dl, menu, ol, ul) {
  margin-block: 0;
}

dd { margin-inline-start: 40px; }
dir, menu, ol, ul { padding-inline-start: 40px; }

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

dir, menu, ul {
  list-style-type: disc;
}
:is(dir, menu, ol, ul) :is(dir, menu, ul) {
  list-style-type: circle;
}
:is(dir, menu, ol, ul) :is(dir, menu, ol, ul) :is(dir, menu, ul) {
  list-style-type: square;
}

/* https://html.spec.whatwg.org/multipage/rendering.html#tables-2
  - Omit presentational hints
  - Omit quirks mode
  - Omit HTML documents
*/

table { display: table; }
caption { display: table-caption; }
colgroup, colgroup[hidden] { display: table-column-group; }
col, col[hidden] { display: table-column; }
thead, thead[hidden] { display: table-header-group; }
tbody, tbody[hidden] { display: table-row-group; }
tfoot, tfoot[hidden] { display: table-footer-group; }
tr, tr[hidden] { display: table-row; }
td, th { display: table-cell; }

colgroup[hidden], col[hidden], thead[hidden], tbody[hidden],
tfoot[hidden], tr[hidden] {
  visibility: collapse;
}

table {
  box-sizing: border-box;
  border-spacing: 2px;
  border-collapse: separate;
  text-indent: initial;
}
td, th { padding: 1px; }
th { font-weight: bold; }

caption { text-align: center; }
thead, tbody, tfoot, table > tr { vertical-align: middle; }
tr, td, th { vertical-align: inherit; }

thead, tbody, tfoot, tr { border-color: inherit; }
table[rules=none i], table[rules=groups i], table[rules=rows i],
table[rules=cols i], table[rules=all i], table[frame=void i],
table[frame=above i], table[frame=below i], table[frame=hsides i],
table[frame=lhs i], table[frame=rhs i], table[frame=vsides i],
table[frame=box i], table[frame=border i],
table[rules=none i] > tr > td, table[rules=none i] > tr > th,
table[rules=groups i] > tr > td, table[rules=groups i] > tr > th,
table[rules=rows i] > tr > td, table[rules=rows i] > tr > th,
table[rules=cols i] > tr > td, table[rules=cols i] > tr > th,
table[rules=all i] > tr > td, table[rules=all i] > tr > th,
table[rules=none i] > thead > tr > td, table[rules=none i] > thead > tr > th,
table[rules=groups i] > thead > tr > td, table[rules=groups i] > thead > tr > th,
table[rules=rows i] > thead > tr > td, table[rules=rows i] > thead > tr > th,
table[rules=cols i] > thead > tr > td, table[rules=cols i] > thead > tr > th,
table[rules=all i] > thead > tr > td, table[rules=all i] > thead > tr > th,
table[rules=none i] > tbody > tr > td, table[rules=none i] > tbody > tr > th,
table[rules=groups i] > tbody > tr > td, table[rules=groups i] > tbody > tr > th,
table[rules=rows i] > tbody > tr > td, table[rules=rows i] > tbody > tr > th,
table[rules=cols i] > tbody > tr > td, table[rules=cols i] > tbody > tr > th,
table[rules=all i] > tbody > tr > td, table[rules=all i] > tbody > tr > th,
table[rules=none i] > tfoot > tr > td, table[rules=none i] > tfoot > tr > th,
table[rules=groups i] > tfoot > tr > td, table[rules=groups i] > tfoot > tr > th,
table[rules=rows i] > tfoot > tr > td, table[rules=rows i] > tfoot > tr > th,
table[rules=cols i] > tfoot > tr > td, table[rules=cols i] > tfoot > tr > th,
table[rules=all i] > tfoot > tr > td, table[rules=all i] > tfoot > tr > th {
  border-color: black;
}

/* https://html.spec.whatwg.org/multipage/rendering.html#form-controls
  - Omit quirks mode
*/

input, select, button, textarea {
  letter-spacing: initial;
  word-spacing: initial;
  line-height: initial;
  text-transform: initial;
  text-indent: initial;
  text-shadow: initial;
  appearance: auto;
}

input:not([type=image i], [type=range i], [type=checkbox i], [type=radio i]) {
  overflow: clip !important;
  overflow-clip-margin: 0 !important;
}

input, select, textarea {
  text-align: initial;
}

:autofill {
  field-sizing: fixed !important;
}

input:is([type=reset i], [type=button i], [type=submit i]), button {
  text-align: center;
}

input, button {
  display: inline-block;
}

input[type=hidden i], input[type=file i], input[type=image i] {
  appearance: none;
}

input:is([type=radio i], [type=checkbox i], [type=reset i], [type=button i],
[type=submit i], [type=color i], [type=search i]), select, button {
  box-sizing: border-box;
}

textarea { white-space: pre-wrap; }

/* https://html.spec.whatwg.org/multipage/rendering.html#the-hr-element-2
  - Omit presentational hints
*/

hr {
  color: gray;
  border-style: inset;
  border-width: 1px;
  margin-block: 0.5em;
  margin-inline: auto;
  overflow: hidden;
}

/* https://html.spec.whatwg.org/multipage/rendering.html#the-fieldset-and-legend-elements */

fieldset {
  display: block;
  margin-inline: 2px;
  border: groove 2px ThreeDFace;
  padding-block: 0.35em 0.625em;
  padding-inline: 0.75em;
  min-inline-size: min-content;
}

legend {
  padding-inline: 2px;
}

legend[align=left i] {
  justify-self: left;
}

legend[align=center i] {
  justify-self: center;
}

legend[align=right i] {
  justify-self: right;
}

/* https://html.spec.whatwg.org/multipage/rendering.html#embedded-content-rendering-rules */

iframe { border: 2px inset; }
video { object-fit: contain; }

/* https://html.spec.whatwg.org/multipage/rendering.html#images-3
- Omit quirks mode
*/

img:is([sizes="auto" i], [sizes^="auto," i]) {
  contain: size !important;
  contain-intrinsic-size: 300px 150px;
}

/* https://html.spec.whatwg.org/multipage/rendering.html#the-details-and-summary-elements
- Omit internal shadow tree styles
*/

details, summary {
  display: block;
}
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;
}

/* https://html.spec.whatwg.org/multipage/rendering.html#the-marquee-element-2 */

marquee {
  display: inline-block;
  text-align: initial;
  overflow: hidden !important;
}

/* https://html.spec.whatwg.org/multipage/rendering.html#the-meter-element-2 */

meter { appearance: auto; }

/* https://html.spec.whatwg.org/multipage/rendering.html#the-progress-element-2 */

progress { appearance: auto; }

/* https://html.spec.whatwg.org/multipage/rendering.html#hidden-elements
- Moved to the bottom because our lack of specificity support causes tag name `display: block` and the below [hidden]
  `display: none` to be last-one-wins.
*/

area, base, basefont, datalist, head, link, meta, noembed,
noframes, param, rp, script, style, template, title {
  display: none;
}

[hidden]:not([hidden=until-found i]):not(embed) {
  display: none;
}

[hidden=until-found i]:not(embed) {
  content-visibility: hidden;
}

embed[hidden] { display: inline; height: 0; width: 0; }

input[type=hidden i] { display: none !important; }

@media (scripting) {
  noscript { display: none !important; }
}