MediaWiki:Spoiler.css

.spoiler {
	position: relative;
}

.spoiler .spoiler-overlay {
	position: absolute;
	inset: 0;
	background-color: var(--very-dark-grey);
	display: flex;
	border-radius: 8px;
	cursor: pointer;
	z-index: 1;
}

.spoiler .spoiler-overlay span {
	margin: auto;
	font-weight: 600;
}

.spoiler .spoiler-overlay, .spoiler .spoiler-content {
	transition: opacity .25s;
}

.spoiler .spoiler-overlay, .spoiler[data-open] .spoiler-content {
	opacity: 1;
	pointer-events: auto;
}

.spoiler[data-open] .spoiler-overlay, .spoiler .spoiler-content {
	opacity: 0;
	pointer-events: none;
}