关于三列布局的一些问题
body{margin:0;padding:0;font-size: 50px;} .top{height:100px;background:green;} .main{height: 400px;background: red;} .left{width:200px;height: 400px;background: lime;position:absolute;left: 0;top:100px;} .right{height: 400px;background: maroon;margin-left:210px;} .foot{height:100px;background:fuchsia;}
我这样也是能到实践的效果。但是为什么rigth{}里不用加right:0;top:100px?