@charset "utf-8";

.base {
	width: 988px;
	height:1640px;
	padding-top:120px;
	margin: 20px auto;
	background:transparent url('../images/cgbase.png') no-repeat scroll left top;
}

.base ul {
	width : 830px;
	height: 256px;
	margin: 0 auto;
	padding-bottom: 15px;
}

.base ul li {
	width : 150px;
	height: 256px;
	padding-left: 20px;
	float:left;
}

.base ul li:first-child {
	padding-left: 0;
}

.base ul li a {
	display: block;
	width: 150px;
	height: 0;
	padding-top: 256px;
	overflow:hidden;
}

.base ul li a:hover {
	background-position: 0 -256px;
}