*{padding:0;margin:0;font-family: "微软雅黑";}
        .on{border-bottom: 2px solid black}
        .header{width: 100%;overflow: hidden;float: left;height: 87px;    background: #32373B;}
        .logo{width:400px;text-align: center;float: left;line-height: 87px;}
        .logo img{max-width: 150px;height: auto;}
        .nav{width: 55%;float: right;}
        .nav_ul{list-style: none;text-align: center;
    line-height: 85px;}
        .nav_li{float: right;width: 12%;}
        .header_banner{width: 100%;background: black;}
        .header_img img{width: 100%}
        .footer{height: 180px;width: 100%;    padding: 5px;}
        .footer_left{width: 50%;text-align: center;    display: inline-block;float: left;}
        .footer_left div{line-height: 43px;display: inline-block;margin-top: 53px;}
        .footer_right{width: 50%;    display: inline-block;margin-top: 53px;}
        /*.content{    height: 1078px;}*/
         .content_bfb{width: 80%;height: 100%;margin:0 auto;padding: 90px;}
         .phone{font-size: 30px}
         .job_time{text-align: right}
         .menutitle{line-height: 100px;background: #32373B;color: #fff;}
         .ohide{overflow: hidden;height: 100%}
        @media screen and (max-width: 770px) {
            .content{padding: 0;padding-bottom: 5px;height:100%;width: 100%}
            .banner{width: 95%}
            .small_box{width: 100%}
            .small_list{width: 82%}
            .small_list ul li{width: 3%;}
            .footer h2{font-size: 21px;}
            .footer_left div{line-height: 25px;}
   
            .phone{font-size: 16px}
             .menutitle{line-height: 40px;}
             h2{    font-size: 23px;}
             h3{    font-size: 20px;}
             .nav_ul{display: none}
         .job_time{text-align: left}

             .logo{width: 100%;text-align: center;}
             .small_list ul li{    margin-right: 3px;}
        .footer_left div{margin-top: 23px;}
       
        .footer_right{margin-top: 23px;}


        }