@media screen and ( max-width:768px){
  .clearfix::before,
  .clearfix::after{
      content: "";
      height: 0;
      line-height: 0;
      display: block;
      visibility: hidden;
      clear: both;
  }
  .clearfix:after{clear:both;}
  .clearfix{
      *zoom:1;/*IE/7/6*/
  }
}
.hcc_right_fixed a:nth-child(4){ overflow:visible; }
.hcc_right_fixed a img.hcc_right_fixed_wx{ display:none;width:170px;height:170px;position:absolute;top:0;left:-170px; }
.hcc_right_fixed a:nth-child(4):hover .hcc_right_fixed_wx{ display:block; }