html, body {
	margin: 0;
	background-color: lightgray;
}
menu {
	position: absolute;
	width: 20vw;
	height: 100vh;
	background-color: lightblue;
	color: white;
	margin: 0;
	padding: 0;
}
menu ul {
	margin: 0;
}

main {
	margin-left: 20vw;
}
#topmenu {
	background-color: aquamarine;
	text-align: right;
}
table.list {
	width: 100%;
	background-color: gray;
}
table.list th {
	background-color: darkgray;
}
table.list td {
	background-color: white;
}