BFC布局 浮动/定位盒子的特点高宽都由内容撑开 缺点:IE6会失效,添加样式zoom:1;触发拥有布局(haslayout)<br clear="all"/>缺点:IE6不支持空标签清除浮动 <div style="clear:both"></div> 缺点:违反了结构行为样式相分离的原则.
clear-fix:{
*zoom:1; /*IE6 IE7不支持伪类元素 开启haslayout*/
}
clear-fix::after{
content:'';
display:block;
clear:both;
}原文:https://www.cnblogs.com/dobeco/p/11385463.html