@media screen and (max-width: 760px){

     .youBox1{
        width:100%;
    }
    .zuoBox1{
        display:none;
    }
    .WXLb1{
        width:100%;
        text-align:left;
    }
    .XWTt{
        width:100%;
        text-align:center;
    }
    .slm{
          width:100%;
            text-align:left;
            padding-left:30px;
            padding-right:30px;
    }

}