#article_nav {
	border-top: 1px solid #00f;
	margin: 0 20px;
	height: 2em;
	padding: 0 1em;
}
#article_nav a {
	display: block;
	background: #00f;
	color: white;
	padding: 2px 5px;
	line-height: 1;
}
#article_nav a:hover {
	background: black;
	text-decoration: none;
}
#article_nav a.prev {
	float: left;
}
#article_nav a.next {
	float: right;
}