双飞翼布局
先加载中间,左右宽度为200,中间自适应
<div class="main">
<div class="container">
<div class="center">中间</div>
</div>
<div class="left">左</div>
<div class="right">右</div>
</div>
.main>div{
float: left;
}
.container{
width: 100%;
}
.center{
background-color: red;
margin: 0 200px;
}
.left{
background-color: yellow;
width: 200px;
margin-left: -100%;
}
.right{
background-color: orchid;
width: 200px;
margin-left: -200px;
}