View source for Template:ws header/styles.css

.ts-thesaurus-header-wrapper {
	display: table;
}

.ts-thesaurus-header {
	border: 1px solid var(--border-color-base,#a2a9b1);
	background-color: var(--background-color-interactive-subtle,#f8f9fa);
	color: inherit;
	display: flex;
	align-items: center;
	flex-wrap: wrap;
}

.ts-thesaurus-header > div {
	padding: 0.28571429em; /* 4 / 14 */
	padding-left: 1em;
}

.ts-thesaurus-header-logo {
	text-transform: uppercase;
}

/* Can't use `::first-letter` here due to some Firefox bug that results in
   setting an incorrect width to `.ts-thesaurus-header-logo`. Have tried
   `width: min-content` and such tricks - didn't work. */
.ts-thesaurus-header-logo-firstLetter {
	font-size: 120%;
}

.ts-thesaurus-header-headword > span {
	font-size: 120%;
	font-weight: bold;
}

.ts-thesaurus-header-search .mw-searchInput {
	min-height: 32px;
}

.ts-thesaurus-header-toc {
	display: none;
	float: right;
	max-width: 33%;
	clear: both;
	margin-left: 0.5em;
}