*{margin:0;padding:0;}
.head{height:100px;background:#ccc;text-align:center;line-height:100px;}
.box{position: fixed;top:110px;left:10px;right:10px;bottom:10px;border:1px solid #ccc;}
.left{float:left;height:100%;width:50%;overflow: auto;}
.right{float:left;width:50%;height:100%;position: relative;}
h2{background:#ddd;height:50px;line-height:50px;text-align:center;}
.right-list{position: absolute;top:50px;left:0;right:0;bottom:0;overflow: auto;}

p{line-height:200px;}