@media screen and (min-width: 680px){
    .head_xc{width: 1100px;margin: 0 auto;height: 60px}
    .bwcx_bg{height: 0px;position: relative;z-index: -1;}
    .bwcx_bt{width:100%;margin: 0px auto;}
    .logo{width: 140px;height: 60px}
    .logo a img{width: 100%;}
    .fontimg{width: 900px;margin: 0 auto}
    .fontimg img{width: 100%;padding: 74px 0;}
}
@media screen and (max-width: 670px){
    body{
        background: none!important;
    }
    .head_xc{width: 100%;background: url(../images/250s.png);height:160px;background-size: 100% 100%;background-repeat: no-repeat}
    .bwcx_bg{height: 0px;position: relative;z-index: -1;}
    .bwcx_bt{width:100%;margin: 0px auto;}
    .logo{width: 140px;}
    .logo a img{width: 100%;}
    .fontimg{width: 100%;text-align: center}
    .fontimg img{display: none}
    .center_bj{
        width: 100%!important;
        margin-top: -25px!important;
    }
    .center_gg{
       padding: 0 5px!important;
    }
    .list1{
        background-color: #0072bc!important;
    }
    .list2{
        padding: 0!important;
        text-align: center;
        width: 100%;
        font-size: 14px !important;
    }
    .list3>li{
        padding: 4px!important;
        line-height: 28px!important;
        padding-left: 0!important;
        background: none!important;
        text-overflow: unset!important;
        overflow: unset!important;
        white-space: unset!important;
    }
}