resources/src/mediawiki.skinning/elements.less
/**
 * MediaWiki style sheet for general styles on basic content elements.
 * IMPORTANT: All rules in this file should only apply to __tag__ selectors (T255717).
 * Styling of non-tag selectors is permitted for backwards compatibility, in only two cases:
 * 1) There is an equivalent tag with the same name in HTML4 (e.g. `.small and <small>)
 * 2) A class matches a tag name and is prefixed with `mw-` e.g. `code` and `.mw-code`
 *
 * Styles for basic elements: links, headings, lists, ….
 *
 * This style sheet is used by the Monobook and Vector skins.
 */

@import 'mediawiki.mixins.less';
@import 'mediawiki.skin.variables.less';

/* stylelint-disable selector-class-pattern */

/* Links */
a {
	text-decoration: none;
	color: @color-link;
	background: none;

	&:not( [ href ] ) {
		cursor: pointer; /* Always cursor:pointer even without href */
	}

	&:visited {
		color: @color-link--visited;
	}

	&:active {
		color: @color-link--active;
	}

	&:hover,
	&:focus {
		text-decoration: underline;
	}
}

/* Inline Elements */
img {
	border: 0; /* FIXME: Remove after adding 'normalize.less' added to all 'elements.less' calling skins. */
	vertical-align: middle;
}

hr {
	// Use `@border-width-base` instead of `1px` to match the default border width.
	height: @border-width-base;
	// Use `@border-color-base` as the element represents a border.
	background-color: @border-color-base;
	border: 0;
	margin: 0.2em 0;
}

/* Structural Elements */
.mw-heading,
h1,
h2,
h3,
h4,
h5,
h6 {
	color: @color-emphasized;
	font-weight: bold;
	margin: 0;
	padding-top: 0.5em;
	padding-bottom: 0.17em;
	// Create a "block formatting context" so that the bottom border on headings
	// don't overlap floated content like infoboxes or thumbnails.
	// In addition, word-break:break-word forces heading to span multiple lines.
	// Together, these two rules are a substitute for overflow: hidden.
	// https://developer.mozilla.org/en-US/docs/Web/CSS/display#flow-root
	/* stylelint-disable-next-line plugin/no-unsupported-browser-features */
	display: flow-root;
	word-break: break-word;
}

.mw-heading1,
h1,
.mw-heading2,
h2 {
	margin-bottom: 0.6em;
	border-bottom: @border-width-base @border-style-base @border-color-base;
}

.mw-heading3,
h3,
.mw-heading4,
h4,
.mw-heading5,
h5 {
	margin-bottom: 0.3em;
}

.mw-heading1,
h1 {
	font-size: 188%;
	font-weight: normal;
}

.mw-heading2,
h2 {
	font-size: 150%;
	font-weight: normal;
}

.mw-heading3,
h3 {
	font-size: 128%;
}

.mw-heading4,
h4 {
	font-size: 116%;
}

.mw-heading5,
h5 {
	font-size: 108%;
}

.mw-heading6,
h6 {
	font-size: 100%;
}

// Override all styles above for `hN` nested inside `.mw-heading`, as used on wikitext pages.
// Also override the most common skin-defined styles to make the migration after T13555 easier.
.mw-heading {
	h1,
	h2,
	h3,
	h4,
	h5,
	h6 {
		// Must be inline to allow `.mw-editsection` to be shown on the same line
		display: inline;
		border: 0;
		margin: 0;
		padding: 0;
		color: inherit;
		font: inherit;
	}
}

p {
	margin: 0.4em 0 0.5em 0;

	img {
		margin: 0;
	}
}

ul {
	margin-top: 0.3em;
	margin-bottom: 0;
	.margin-inline( 1.6em, 0 );
	padding: 0;
}

ol {
	margin-top: 0.3em;
	margin-bottom: 0;
	.margin-inline( 3.2em, 0 );
	padding: 0;
	list-style-image: none;
}

dd {
	margin-bottom: 0.1em;
	.margin-inline( 1.6em, 0 );
}

li {
	margin-bottom: 0.1em;
}

dt {
	font-weight: bold;
	margin-bottom: 0.1em;
}

dl {
	margin-top: 0.2em;
	margin-bottom: 0.5em;
}

/* FIXME: Duplicated ruleset if skins using ResourceLoaderSkinModule
load the features `normalize` and `elements`. */
pre,
code,
tt,
kbd,
samp,
.mw-code {
	/* Support: Blink, Gecko, Webkit; enable unified font sizes for monospace font. T176636 */
	font-family: monospace, monospace;
}

pre,
code,
.mw-code {
	background-color: @background-color-neutral-subtle;
	color: @color-emphasized;
	border: @border-width-base @border-style-base @border-color-muted;
}

code {
	border-radius: @border-radius-base;
	padding: 1px 4px;
}

pre,
.mw-code {
	padding: 1em;
	/* Wrap lines in overflow. T2260, T103780 */
	white-space: pre-wrap;
	/* Create a new block formatting context */
	overflow-x: hidden;
	/* Break really long words when they overflow to the next line */
	word-wrap: break-word;
}

/* Tables */
table {
	font-size: 100%;
}

/* Forms */
fieldset {
	border: @border-width-base @border-style-base #2a4b8d;
	margin: 1em 0 1em 0;
	padding: 0 1em 1em;
}

legend {
	padding: 0.5em;
}

form {
	border: 0;
	margin: 0;
}

textarea {
	display: block;
	box-sizing: @box-sizing-base;
	width: 100%;
	/* Support: Firefox */
	/* Border rule required to override system appearance on Linux. T13641. */
	border: @border-width-base @border-style-base @border-color-base;
	padding: 0.1em;
}

/* Emulate Center */
.center {
	width: 100%;
	text-align: center;
}

*.center * {
	margin-left: auto;
	margin-right: auto;
}

/* Small for tables and similar */
.small {
	font-size: 94%;

	table& {
		font-size: 100%;
	}
}
