/*内容*/
.tupian{
	width: 1000px;
	height: 300px;
}
.xiaotupian{
	width: 100%;
	height: 180px;
	overflow: hidden;
	box-sizing: border-box;
}
.xiaotupian>li{
	float: left;
	width: 25%;
	height: 180px;
	border-left: 1px dotted  #CBCBCB;
	border-top: 1px solid  #CBCBCB;
	box-sizing: border-box;
	padding: 15px 20px;
}
.xiaotupian>li>img{
	width: 100%;
}
.zuihou{
	border-right: 1px dotted  #CBCBCB;
	
}