nav {
		-moz-column-gap: 3em; -webkit-column-gap: 3em;
	column-gap: 3em;
		-moz-column-width: 21em; -webkit-column-width: 21em;
	column-width: 21em;
	text-align: left;
}
nav > ul {
	margin: 0;
}
nav > ul > li {
	page-break-inside: avoid;
	break-inside: avoid;
	font-weight: bold;
	list-style: none;
	margin: 0 0 1.5em;
}
nav ul ul {
	font-weight: normal;
	margin-left: 1.5em;
}
h1 {
	margin-bottom: 0;
}
h2 {
	margin-top: 0;
	text-align: center;
}
.auth {
	font-size: 87.5%;
	margin-left: 3rem;
}
.return a {
	font-weight: bold;
	text-decoration: none;
}
.return a:before {
	content: "\2190\a0";
}