body {
	font-family: sans-serif;
	margin: 20px;
	max-width: 800px
}
nav {
	text-align: right;
	cursor: pointer;
}

.light {
	background-color: white;
	color: black;
}
.dark {
	background-color: black;
	color: white;
}
.dark a {
	color: yellow;
}