body {
	background: #aaa;
}
#content {
	background: white;
	border: 1px solid #888;
	padding: 20px;
	width: 800px;
	height: 600px;
	overflow: auto;
}

ul#mainNav li {
	display: inline;
	padding: 0;
	margin: 0;
}
#mainNav a {
	background: #fff;
	border-left: 1px solid black;
	padding: 0px 5px 0px 7px;
}
ul#mainNav li:first-child  a {
	border-left: 0px;
}