body{background: blue; 
	width: 960px; 
	margin: 0 auto;}

header, footer{background: white;}

nav{background: white; height: 50px; margin-bottom: 10px;}

section{border: 1px solid white;}

article, aside{display: inline-block; height: 300px;}
article{background: white; width: 600px;}
aside{background: green; width: 354px;}