@media only screen and (max-width: 640px) {
   
    .logo{
        padding: 0;
        margin: 0;
    }
    .col-xs-12 .logo{
        padding: 0;
        margin: 0;
    }
    .product_left .bigImg{
        width: 100%;
        
    }
    .nav_box{
        float: none;
        text-align: center;
    }
    .col-xs-12{
        padding: 0;
    }
    .product_left{
        width: 100%;
    }
    .column_right{
        width: 100%;
    }
    .warn{
        padding: 0;
    }

    .tubiao{
        height: 80px;
        line-height: 80px;

    }
      .slide-list {
          width: auto;
          height: auto;
          padding: 0;
          border: solid 1px #eae3d7;
          right: 0.2rem;
          background: #fff;
          border-radius: 0.05rem;
          position: absolute;
          top: 5rem;
          z-index: 10;
      }

      .slide-list ul {

          width: auto;
          margin: 0;

      }

      .slide-list li {
          padding: 0 0.5rem 0 0.5rem;
          min-width: 3rem;
          height: 4rem;
          line-height: 4rem;
          text-align: left;
          border-bottom: solid 1px #eee;
      }

      .slide-list ul li a {
          color: #333;
          font-size: 2rem;
          display: block;
          width: 100%;
          height: 100%;
      }
      .col-xs-1{
        padding-left: 0;
        padding-right: 0;
      }
      .warn .fl-right dd{
        width: 100%;
      }
      .footer1{
        margin-bottom: 50px;
      }
}