#vsb_content table{
        width:770px;
    }
    .mz,.mzt,.mzy{
        font-size:18px;
    }
    .QRCode img{
        width:300px;
        height:300px
    }

@media only screen and (max-width: 1200px){
    #vsb_content table{
        width:500px;
    }
    .mz,.mzt{
        font-size:18px;
    }
    .QRCode img{
        width:200px;
        height:200px
    }
}
@media only screen and (max-width: 768px){
    #vsb_content table{
        width:440px;
    }
    .mz,.mzt{
        font-size:18px;
    }
    .QRCode img{
        width:200px;
        height:200px
    }
    
}
@media only screen and (max-width: 450px){
    #vsb_content table{
        width:310px;
    }
    .mz{
        font-size:13px;
        padding :1px;
    }
    .mzt{
        font-size:16px;
    }
    .mzy{
        font-size:17px;
    }
    .QRCode img{
        width:300px;
        height:300px
    }
}
@media only screen and (max-width: 376px){
    #vsb_content table{
        width:295px;
    }
    .mz{
        font-size:12px;
        padding :1px;
    }
    .mzt{
        font-size:15px;
    }
    .mzy{
        font-size:16px
        
    }
}