.clearfix:after{
    content: ""; 
    display: block; 
    height: 0; 
    clear: both; 
    visibility: hidden;  
    }
  
  .clearfix {
    /* 触发 hasLayout */ 
    zoom: 1; 
    }
    
  .fl{
      float: left!important;
  }
  .fr{
      float:right!important;
  }
  li,ul,p{
    margin: 0;
    padding: 0;
    list-style: none;
  }

  .contentBox{
    	width: 100%;
		min-height: 712px;
		box-sizing: border-box;
		background: #fff;
		margin: 15px!important;
		padding: 20px!important;
		position: relative;
	}