Follow the DOM CSS

domCSS

header {
	height: 88px;
}
header section  {
	position: relative;
	color: #fff;
}
aside  {
	float: right;
	width: 330px;
	color: #fff;
}
nav  {
	margin: 0 345px 20px 0;
	min-width: 800px;
}
nav ul  {
	height: 86px;
	width: 670px;
	margin: auto;
}
nav ul li  {
	float: left;
	height: 64px;
	width: 64px;
	background: #fc0;
	margin: 10px 0 10px 10px;
}
nav ul li img  {
	width: 64px;
	height: 64px;
}
article  {
	background: white url("../img1.png") repeat-y;
	border-left: none;
	min-height: 600px;
	margin: 0 345px 0 0;
	position: relative;
	min-height: 600px;
	border: 1px solid #9a9b9b;
	-moz-box-shadow: 1px 0 10px 1px black;
	-webkit-box-shadow: 1px 0 10px 1px black;
	box-shadow: 1px 0 10px 1px black;
}