@media screen and (max-width:1100px){
    #contact{padding:50px 0 30px;}
}
@media screen and (max-width:767px){
    #nav .navbar-nav{ width:auto;}
    #nav .navbar-nav > li{ width:100%; }
    #banner{ display:none;}
    #beijing .row{ overflow:hidden;}
    #beijing .col-sm-2{ width:20%; float:left;}
    #beijing .row span{ font-size:80%;}
    #shebei .row{ background:none; padding-left:0;}
    #shebei .row img{ margin:0 auto; }
    #shebei .anniu{ text-align:left;}
    #shebei p.row{ display:none;}
    .btn-default{background: #E68422; padding: 2px 5px; box-shadow: 0px 2px 0px #D06700; margin:0 0 20px; border:0;}
    .anniu .btn-default:hover{ background:#E68422; color:#fff;}
    #shebei .zixun{ height:auto; line-height:normal;}
    #kehu .row{ overflow:hidden;}
    #kehu .col-sm-4{ width:50%; float:left;}
    #kehu .col-sm-4 a img{ width:100%;}
    #jishu{ padding-top:40px;}
    #contact .col-sm-5{ display:none;}
    #contact .col-sm-7{ margin-left:0;}
}
@media screen and (max-width:500px){
    #nav .navbar-nav{ overflow:scroll;}
    #nav .navbar-nav li:nth-child(4){ display:none;}
    #beijing .col-sm-2{ padding:0 2px;}
    #banner img{ height:200px;}
    #kehu .col-sm-4{ width:98%; clear:both;}
    #canshu{ display: none;}
}