nextcloud-server/apps/files_versions/src/css/versions.css

.versionsTabView .clear-float {
	clear: both;
}

.versionsTabView li {
	width: 100%;
	cursor: default;
	height: 56px;
	float: left;
	border-bottom: 1px solid rgba(100,100,100,.1);
}
.versionsTabView li:last-child {
	border-bottom: none;
}

.versionsTabView a,
.versionsTabView div > span {
	vertical-align: middle;
	opacity: .5;
}

.versionsTabView li a{
	padding: 15px 10px 11px;
}

.versionsTabView a:hover,
.versionsTabView a:focus {
	opacity: 1;
}

.versionsTabView .preview-container {
	display: inline-block;
  vertical-align: top;
}

.versionsTabView .version-container img, .revertVersion img {
	filter: var(--background-invert-if-dark);
}

.versionsTabView img {
	cursor: pointer;
	padding-right: 4px;
}

.versionsTabView img.preview {
	cursor: default;
}

.versionsTabView .version-container {
	display: inline-block;
}

.versionsTabView .versiondate {
	min-width: 100px;
	vertical-align: super;
}

.versionsTabView .version-details {
	text-align: left;
}

.versionsTabView .version-details > span {
	padding: 0 10px;
}

.versionsTabView .revertVersion {
	cursor: pointer;
	float: right;
	margin-right: -10px;
}

.versionsTabView .emptycontent {
	margin-top: 50px !important;
}