body {
	background-color: #fdd;
	background: radial-gradient(at 50% 0, #a08, #fdd 400px);
	background-attachment: fixed;
	min-height: 100vh;
	color: black;
	padding: 0;
	margin: 0;
	font-family: sans-serif;
	font-size: 12pt;
}
header {
	background-color: #fee;
	padding: 20px;
	padding-left: max(10px, calc(50% - 420px));
	margin: 0;
	margin-bottom: 20px;
	border-bottom: 2px solid #888;
	font-size: 16pt;

	display: flex;
	flex-direction: row;
	flex-wrap: wrap;
	justify-content: space-between;
	align-items: end;
}
header > div {
	padding: 0;
	margin: 0;
	max-width: 800px;

	display: flex;
	flex-direction: column;
	justify-content: start;
}
header > div > h1 {
	font-size: 20pt;
}
header > div > h1, header > div > p {
	padding: 0;
	margin: 20px;

	display: block;
}
header > * > ul {
	padding: 0;
	margin: 0;

	display: flex;
	flex-direction: row;
	flex-wrap: wrap;
}
header > * > ul > li {
	padding: 0;
	margin: 20px;

	display: block;
}
a {
	color: #a08;
	text-decoration: underline;
}
a:hover {
	text-decoration: none;
}
main {
	border: 2px solid #aaa;
	background-color: #fff;
	min-height: 500px;

	padding: 20px;
	margin: 0;
	margin-top: 20px;
	margin-bottom: 20px;

	max-width: 800px;
	margin-left: auto;
	margin-right: auto;
}
@media (prefers-color-scheme: dark) {
	body {
		background-color: #111; 
		background: radial-gradient(at 50% 0, #d6a, #111 400px);
		background-attachment: fixed;
		color: white;
	}
	header {
		background-color: #312;
	}
	a {
		color: #d6a;
	}
	main {
		border-color: #444;
		background-color: #111;
	}
}