.campus li{
	float: left;
	width: 288px;
	background: url(../images/index_51.png) no-repeat center bottom;
	padding-bottom: 17px;
	margin: 0 8px;
	position: relative;
}
.campus li p{
	width: 268px;
	position: absolute;
	bottom:17px;
	left:0;
	background: rgba(0,0,0,0.6);
	color: #fff;
	height: 30px;
	line-height: 30px;
	padding: 0 10px;
}