http://www.zhangxinxu.com/css3/css3-box-sizing.php
box-sizing:border-box; -o-box-sizing:border-box; -ms-box-sizing:border-box; -moz-box-sizing:border-box; -webkit-box-sizing:border-box;
关于box-sizing,布布扣,bubuko.com
关于box-sizing
原文：http://www.cnblogs.com/daishuguang/p/3582911.html
