标签：lock pos over 伪类 after clear box 标签 style
解决办法:
1.添加额外标签
<div style="clear:both;"></div>
2.父级添加伪类
.box1:after{ content: ‘ ‘; height: 0; visibility: hidden; display: block; clear:both; }
3.父级添加浮动;
4.父级添加overflow:hidden或auto;
5:父级添加固定高度;
6.父级添加绝对定位: position: absolute;
标签：lock pos over 伪类 after clear box 标签 style
原文地址：http://www.cnblogs.com/zh2289633869/p/7341392.html
