两栏布局自适应主流方法

<div class='container'>    <div class='left'>1</div>    <div class='right'>2</div></div>

//1: absolute + padding + %.container{padding-left: 200px; position: relative;}.left{height: 200px; position: absolute; left: 0;}.right{width: 100%;}    //block元素, width可不设

//2: float + BFC.left{float: left; width: 200px;}.right{overflow: hidden;}

//3: flex.container{display: flex;}.left{width: 200px;}.right{flex: 1;}

By: chocking