@media screen and (max-width:800px){
    .ztr-header{height:450px; background: url(../images/mb_header_bg.jpg) center top no-repeat;}
    .wrap-hd{width:90%;}
    .wrap-hd .logo img{max-width:40%;}
    .w1200,.main{width:100%!important;}
    .news-item{width:auto;height:auto;margin-bottom:10px;}
    .news-info{padding:10px;padding-left:72px;}
    .content-news{height:530px;margin-top: 0;}
    .news-buttom{margin:10px 0px;}
    .list li>a>img{height: auto;}
    .video{height:auto;}
    .video video{width:340px;height:auto;}

    .news-top p{width: 80%;font-size: 18px;}
    
    .list li{display: flex; flex-direction: column;}
    .list li>div{display: block;float: none;width: 100%;}
    .list li>a{float: none;width: 100%;}
    
        .main {width: 100%;padding: 0 15px;}

        #topzt{display:none;}
        .footer .rg{display:none; float:none;text-align: center;}
        .footwap {float: none;font-size: 14px;color: #fff;display: block;margin: 0 auto;text-align: center;line-height: 26px; padding-bottom: 10px;}
        .bg{display:none;}
        ._hidden{display:block;}

        .oldyy-btn{top:80px;}
    }