<!DOCTYPE html><html><head>??? <meta charset="utf-8">?? ?<title></title>?? ?<style type="text/css">?? ??? ?#left {?? ?float: left;?? ?width: 220px;?? ?height: 200px;?? ?background: blue;?? ?}?? ??????? ??? ?#right{?? ?float: right;?? ?width: 220px;?? ?height: 200px;?? ?background: blue;?? ?}?? ??????? ??? ?#main {?? ?height: 200px;?? ?background:red;?? ?margin: 0 230px;?? ?}?? ?</style></head><body>??? <div id="left">left </div>?? ?<div id="right">right</div>?? ?<div id="main">mian</div></body></html>
三欄布局（兩邊固定，中間自適應(yīng)），為什么我兩種方法一樣，結(jié)果也不一樣？
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2016-05-18 21:49:09
