Sablon:NavFrame/style.css

.NavFrame {
	margin: 0;
	padding: 2px;
	border: 1px solid var(--border-color-base, #a2a9b1);
	text-align: center;
	border-collapse: collapse;
	font-size: 95%;
}
.NavFrame + .NavFrame {
	border-top-style: none;
	border-top-style: hidden;
}
.NavHead {
	min-height: 1.6em;
	font-weight: bold;
	font-size: 100%;
	background-color: #efefef;
	background-image: linear-gradient(#EFEFEF, #E3E3E3 60%, #DFDFDF);
	color: #202122;
	padding-left: 10px;
}
.NavFrame > .mw-collapsible-toggle, /* collapsible toggle */
.NavFrame::before /* placeholder for the toggle before JS finished to load */
{
	margin: 0 5px;
}
.NavFrame > .mw-collapsible-content {
	margin-top: 2px;
	overflow-x: auto;
}