左右高度自适应
1.先用一个大盒子A包裹 盒子 L(盒子左),R(盒子右); 2.A盒子display: inline-block;border-left: (盒子L的宽度) solid (盒子L 的背景颜色); 3, L(盒子左),R(盒子右)全部有浮动; 4, L(盒子左)margin-left:-(L盒子左的宽度) <!doctype html> <html lang="en"> <head> <meta charset="UTF-8" /> <title>Document</title> <style> .wai{ background: #ccc; } .nei{ display: inline-block; border-left:200px solid #a8a8d8; vertical-align: bottom; } .left{ width: 200px; margin-left: -200px; height:auto; float: left; } .right{ float: left; } </style> </head> <body> <!--<div class="wai">--> <div class="nei"> <div class="left">这是左边内容</div> <div class="right">这是右边内容</div> </div> <!--<