clearfix:清除浮动(收藏)

.clearfix:after{
content: “.”;
display: block;
height: 0;
clear: both;
visibility: hidden;
}
.clearfix {
display: inline-block;
}
/* Hides from IE-mac */
* html .clearfix {
height: 1%;
}
.clearfix {
display: block;
}
/* End hide from IE-mac */