记录一下 clearfix 清除浮动

.clearfix{
  overflow:hidden;
  _zoom:1;

  &:after {
    visibility: hidden;
    display: block;
    font-size: 0;
    content: " ";
    clear: both;
    height: 0;
  }
}

来源：CSDN

作者：lqzh_101224

链接：https://blog.csdn.net/lq099526/article/details/103783322