html, body
{
	background:#fff;
	color:#000;
	font-size:100%;
}
body
{
	padding:15% 10px 50% 10px;
}

nav
{
	display:block;
	margin-bottom:2em;
}

details
{
	display:block;
	margin-bottom:1em;
	
}
details:last-child
{
	margin-bottom:0;
}
details details
{
	margin-top:0.5em;
	font-size:0.85em;
}

details summary
{
	display:block;
	padding:0.25em;
	border:2px solid gray;
	background:#f2f2f2;
	cursor:default;
}
details summary[tabindex]
{
	cursor:pointer;
}
details summary span.twisty
{
	display:inline-block;
	width:1em;
	margin-right:0.6em;
	font-size:0.8em;
}

details div
{
	display:block;
	padding:0.5em;

	border:2px solid gray;
	border-top:none;
}
details div[aria-expanded="false"]
{
	display:none;
}
details div p
{
	margin:0;
}