mediawiki-skins-Vector/resources/skins.vector.styles/components/Dropdown.less

/**
 * Dropdown container
 */
.vector-dropdown {
	position: relative;

	/**
 	 * Dropdown toggle buttons. Doesn't apply to icon only buttons like the main menu dropdown.
 	 * - language variants, Actions menus
 	 * - more menu, user menu
 	 * - ULS button in sticky header
 	 */
	.vector-dropdown-label:not( .cdx-button--icon-only ) {
		.mixin-vector-arrowed-dropdown-toggle();
	}

	/**
	 * Invisible checkbox covering the dropdown toggle button.
	 */
	.vector-dropdown-checkbox {
		cursor: pointer;
		position: absolute;
		top: 0;
		left: 0;
		z-index: @z-index-stacking-1;
		opacity: 0;
		width: 100%;
		height: 100%;
		margin: 0;
		padding: 0;

		// Hide and show menu content based off checked status.
		&:checked ~ .vector-dropdown-content {
			opacity: 1;
			visibility: visible;
			height: auto;
		}
	}

	.vector-dropdown-content {
		position: absolute;
		top: 100%;
		left: -@border-width-base;
		opacity: 0;
		height: 0;
		visibility: hidden;
		overflow: hidden;
		margin: 0;
		padding: 4px 0;
		z-index: @z-index-dropdown;
		background-color: @background-color-base;
		border: @border-width-base @border-style-base @border-color-base;
		box-shadow: 0 1px 1px 0 rgba( 0, 0, 0, 0.1 );
		transition-property: opacity;
		transition-duration: @transition-duration-base;
		// TODO Add consistent min/max values for dropdowns in T316055
		width: max-content;
		max-width: 200px;
	}
}

.vector-pinnable-element,
.vector-dropdown-content {
	.vector-menu-heading {
		.mixin-vector-dropdown-menu-item();
		.mixin-vector-menu-heading();
	}

	.mw-list-item {
		padding: 0;
	}

	.mw-list-item a {
		// Mirror styles from Dropdown.less
		.mixin-vector-dropdown-menu-item();
		color: @color-link;
	}

	> *:not( :last-child ) {
		// Apply bottom border to every children of dropdown contents and pinnable elements except the last
		border-bottom: @border-width-base @border-style-base #eaecf0;
	}
}

/**
 * Dropdown menu items.
 */
.vector-dropdown .mw-list-item {
	padding: 0;

	a {
		.mixin-vector-dropdown-menu-item();

		// The link is a mw-selflink in the case of temporary users.
		&:not( .mw-selflink ) {
			color: @color-link;
		}
	}

	.selected a,
	.selected a:visited {
		color: @color-link-selected;
		text-decoration: none;
	}
}