.fanganl {width: 75%;height:100%; float:left;background: url("http://www.xasksm.com/uploadfile/2018/0119/20180119104131647.jpg") no-repeat center;
      background-size: cover;}
.fanganr {width:25%;height:100%; float:left; background-color: #333333; color:#fff;padding:0 20px;}
.box{
height:240px;}