View source for Template:Expand/styles.css

.expandable-container {
    background-color: var( --color-surface-1 );
    border: 1px solid var( --border-color-base );
	border-radius: var( --border-radius--large );
    /* padding: 1rem;
    margin-top: 1em; */
    padding: 0;
    margin: 0;
}

.expandable-header {
    font-weight: bold;
}

/* .expandable-container + :not(.expandable-container) + .expandable-container {
    margin-top: 1rem;
} */

/* NOTE: The CSS written below is repeated in MediaWiki:Common.css so that   */
/* the "[Expand]" and "[Collapse]" text that MediaWiki automatically fills in*/
/* is removed more quickly. Basically, this makes for faster page loading.   */
.mw-collapsible-toggle {
    float: left;
    width: 100%;
}

.mw-collapsible-toggle:hover {
    background-color: var( --color-surface-2 );
    border-radius: var( --border-radius--large);
}

.mw-collapsible-toggle.mw-collapsible-toggle-expanded {
    border-bottom-left-radius: 0;
    border-bottom-right-radius: 0;
    border-bottom: 1px solid var( --border-color-base );
}

.mw-collapsible-text {
    float: left;
    /* margin: 1rem 0; */
    margin: 1rem;
    padding: 0;
    font-weight: bold;
}
/* .mw-collapsible-toggle::after {
    content: 'test';
    background-color: green;
    color: red;
    display: inline-block;
    width: 100%;
} */
/* .mw-collapsible-toggle-default, */
.mw-collapsible-toggle-default::before {
    display: none;
}
.mw-collapsible-toggle-default::after {
    content: '⟩';
    margin: 1rem;
    float: right;
    font-weight: bold;
}
.mw-collapsible-toggle-default.mw-collapsible-toggle-expanded::after {
    transform: rotate(90deg);
    transition: 100ms;
    margin-right: 1.5rem;
}
.mw-collapsible-toggle-default.mw-collapsible-toggle-collapsed::after {
    transform: rotate(0deg);
    transition: 100ms;
    margin-right: 1.5rem;
}

/* .mw-collapsible-toggle-default::before {
    font-weight: bold;
} */

/* .mw-collapsible-toggle-default.mw-collapsible-toggle-collapsed::before {
    content: '⟩';
    margin: 1rem;
    float: right;
}

.mw-collapsible-toggle-default.mw-collapsible-toggle-expanded::before {
    content: '⟩';
    margin: 1rem;
    float: right;
} */

/* .mw-collapsible-toggle-default.mw-collapsible-toggle-collapsed {
    transform: rotate(0deg);
    transition: 100ms;
    margin-right: 1em;
}

.mw-collapsible-toggle-default.mw-collapsible-toggle-collapsed:hover {
    color: var(--color-primary);
}

.mw-collapsible-toggle-default.mw-collapsible-toggle-expanded {
    transform: rotate(90deg);
    transition: 100ms;
    margin-right: 1em;
    color: var(--color-primary);
} */

/* .mw-collapsible-text {
    display: none;
} */

.mw-collapsible-content {
    display: block !important;
}

.expandable-content-container {
    transition: 10000ms;
    height: 100%;
}

.mw-collapsed .expandable-content-container {
    height: 0;
    padding: 0;
    overflow: hidden;
}

.expandable-content-container *:last-child {
    padding-bottom: 0;
    /* margin: 0; */
    /* width: 100%;
    height: 100%; */
}
Description	What you type	What you get
Italic	''Italic text''	Italic text
Bold	'''Bold text'''	Bold text
Bold & italic	'''''Bold & italic text'''''	*Bold & italic text*