给浮动元素的父元素,清除浮动
单伪类清除浮动
.clearfix:after{
content: "";
display: block;
height: 0;
clear:both;
visibility: hidden;
}
.clearfix{
*zoom: 1;
}
overfllow:hidden 清除浮动
overflow: hidden;
双伪类清除浮动
.clearfix:after,.clearfix:before {
content: '';
display: table;
}
.clearfix:after {
clear: both;
}
.clearfix {
*zoom: 1
}
