无标题文档 #left{ width:200px;height:450px; position:absolute; left:0px; background:red; border:1px #000 solid} #right{width:200px;height:450px; position:absolute; right:0px; background:blue; border:1px #000 solid} #x,#y{ width:10px; height:10px;position:absolute;right:0px; top:0px;} x x [Ctrl+A 全选 注:引入外部Js需再刷新一下页面才能执行]