开发笔记:常用的清除浮动做法

.clearfix{
*zoom:1;
}
.clearfix:after{
content: "";
display: block;
clear: both;
visibility: hidden;
}

.clearfix:before, .clearfix:after{
content:"";
display:table;
}
.clearfix:after{
clear:both;
}
.clearfix{
*zoom:1;
}