产品评价 商家回复倒三角形

 <div id="triangle-down"></div>

/*掌柜回复 三角形*/
 #triangle-dwn {

      width: 0;
      height: 0;
      position: relative;
      left:25px;
      border-left: 6px solid transparent;
      border-right: 6px solid transparent;
      border-bottom: 8px solid #f3f3f3;

}