/* <!-- 产品列表 --> */
 .product_list{
     margin-bottom:30px;
 }
 .product_list li{
    display:inline-block;
    margin-right:20px;
    width:330px;
    height:466px;
    vertical-align: top;
 }

 .product_list li:nth-child(3n+3) {
    margin-right:0;
}
 .product_introduction{
    width:330px;
    height:330px;
    border:1px solid #bababa;
    text-align: center;
    display: table-cell;
    vertical-align:middle;
 }
 .single_product{
     color:#464646;
     font-size:20px;
     margin-left:10px;
     margin-top:27px;
     margin-bottom:5px;
 }
 .single_product_int{
    font-size:14px;
    margin-left:10px;
 }
 @media (max-width:767px){
   /* 产品列表 */
   .product_list li{
      margin-right:0;
      width:49%;
      height:360px;
   }
   .product_introduction{
      width:49%;
      height:200px;

   }
   .product_introduction img{
      max-height: 180px;
    max-width: 70%;
   }
 }