body {
	margin: auto;
	padding-left: 10px;
	padding-right: 10px;
	max-width: 840px;
	font-family: sans-serif;
	font-size: 18px;
	background-color: #222;
	color: #eee;
}

a {
	color: #0ca;
	text-decoration: none;
}

a:hover {
	color: #c0f;
	text-decoration: none;
}

img {
	max-width: 600px;
	max-height: 400px;
	display: block;
	margin: auto;
}

pre {
	display: block;
	background-color: #111;
	color: #fff;
	padding: 5px;
	overflow-x: auto;
}