body {
	max-width: 80ch;
	margin: auto;
	padding: 1em 0.5em;
}
h1,
h2 {
	padding: 0;
	margin: 0;
}
h4 {
	padding-top: 1em;
}
ul {
	padding-left: 1em;
}
ul > li:nth-child(2n) {
	/* zebra stripes */
}
ul ul {
	padding-left: 2em;
}
img {
	image-rendering: crisp-edges;
	image-rendering: pixelated;
}
#skip-nav {
	position: absolute;
	left: -9999px;
	top: -9999px;
	z-index: 100;
}
#skip-nav:focus {
	left: 0.25em;
	top: 0.25em;
	z-index: 0;
}
#nav {
	margin-top: 1em;
	font-weight: bold;
}
#nav a,
#nav span {
	font-weight: normal;
	text-wrap: nowrap;
}
#main {
	margin-top: 0;
	padding-bottom: 1em;
	margin: auto;
	width: 80%;
}
#main a {
	word-break: break-all;
}
.icon {
	position: relative;
	top: 2px;
}
.additional {
	font-size: 0.9em;
}
@media (prefers-color-scheme: dark) {
	body {
		background: black;
	}
	.invert {
		color: black;
		background: white;
		filter: invert();
	}
}
@media screen and (max-width: 500px) {
	#main {
		width: 95%;
	}
}