* {
	margin: 0;
	padding: 0;
	font-family: sans-serif;
	user-select: none;
}
header {
	float: left;
	width: 256px;
	height: 100%;
	background: gainsboro;
}
main {
	float: left;
	width: calc(100% - 256px);
	height: 100%;
}
.hdrh1 {
	font-size: 32px;
	margin-top: 16px;
	text-align: center;
}
.hdrdiv {
	margin-bottom: 24px;
}
.hdrdiv a {
	display: block;
	width: fit-content;
	color: black;
	text-decoration: none;
	padding: 4px 8px;
	background-color: white;
	border-radius: 16px;
	font-size: 16px;
	margin: 4px auto 0 auto;
}
.hdrdiv a:hover {
	color: white;
	background-color: gray;
}