常用CSS代码收集

清除浮动clearfix CSS：

<style>
  .clearfix:after {
    visibility: hidden;
    display: block;
    font-size: 0;
    content: " ";
    clear: both;
    height: 0;
  }
  .clearfix { display: inline-table; }
    /* Hides from IE-mac \*/
    * html .clearfix { height: 1%; }
    .clearfix { display: block; }
    /* End hide from IE-mac */
</style>