body{color:#000;background:#fff url(bg.png) no-repeat 50% 0;font:12px/1.6 Verdana, Helvetica, sans-serif;text-align:center;}
*{margin:0;padding:0;}
input,select{font-size:12px;vertical-align:middle;}
body div{text-align:left;}
textarea,input{word-wrap:break-word;word-break:break-all;padding:0px;}
li{list-style-type:none;}
img{border:0 none;}
a:link, a:visited{color:#333;text-decoration: none;outline: none;}
a:hover{color:#E13939;text-decoration: underline;}
h1{ font-size:24px;}
h2{ font-size:20px;}
h3{ font-size:18px;}
h4{ font-size:16px;}
h5{ font-size:14px;}
h6{ font-size:12px;}
.block {width:1000px; height:auto; clear:both;margin:0 auto;}
.clearfix:after {visibility: hidden;display: block;font-size: 0;content: " ";clear: both;height: 0;}
.clearfix { display: inline-table; }
* html .clearfix { height: 1%; }
.clearfix { display: block; }
原文：http://www.cnblogs.com/ruanzheng188/p/5208846.html