#classList {
	background-color:#e0e9f3;
	width:90%;
	text-align:center;
	/*set auto make it cenetr in ff*/
	margin:5px auto 5px auto;
}
#classList .list{
	padding: 5px;
	width:25%;
	background-color:#F4F8FB;
}
#urlList {
	background-color:#e0e9f3;
	width:90%;
	text-align:center;
	/*set auto make it cenetr in ff*/
	margin:10px auto 10px auto;
}
#urlList .list{
	padding: 5px;
	width:25%;
	background-color:#FFFFFF;
}