@media only screen and (min-width: 1900px){
    .container {
        -webkit-transition: all .5s;
        -moz-transition: all .5s;
        -ms-transition: all .5s;
        -o-transition: all .5s;
        transition: all .5s;
        width: 1500px;}
    .product-center .caption .thumbnail .img-box {
        width: 345px !important;
        height: 272px !important;
        margin:0 auto;
    }

}
@media only screen and (min-width: 1200px) {
    /*导航*/
    .navbar-default{background:none;}
    #nav>div ul li a {
               font-size: 2rem;
               font-family: SourceHanSansSC-Bold;
    }
    #nav>div ul li ul li a {
        font-size: 1.6rem;
    }

    /*底部*/
    footer .footer-top {
        font-size: 1.4rem;
    }
    footer .stick a {
        width: 50px;
        height: 50px;
        line-height: 50px;
    }
}
@media only screen and (min-width: 770px) {
    /*底部*/
    .footer-midden-display {
        text-align: right;
    }
}
@media screen and (min-width: 768px){
    /*导航*/
   #nav #navbar-collapse ul{display: none;}
    #nav .col-xs-12{max-height:0;}
    /*底部*/
    footer .stick{top:40px;}
    footer .stick a {
        width: 40px;
        height: 40px;
        line-height: 40px;
    }
}

/* Small devices (min-width: 576px) (max-width: 767.98px) // (landscape phones, less than 768px) */
@media only screen and (max-width: 767.98px) {
    /*导航*/
  #nav .text-box>ul{display: none;}

     /*底部*/
    footer #footer-top ul li:first-child {
        font-size: 1.4rem;
        padding-top: 2%;
    }
    footer .footer-bottom ul li {
        font-size: 1.2rem;
    }
    footer .footer-bottom .col-xs-6 {
        font-size: 1rem;
    }
    footer .footer-top .row .list-group li div img,footer .footer-top .row .list-group li div img+p{
        padding:0;
    }
    footer #footer-bottom{padding:5px;}
  footer  .list-group .list-group-item {
        display: inline-block;
        padding: 5px;
    }
   footer .list-group {
        margin-bottom: 0;
    }
}
@media only screen and (max-width: 700px){
    /*底部*/
    footer #footer-bottom div .row .footer-top-display{width:100%;text-align: center;font-size:1.4rem;}
    .footer-midden-display {
        width: 100%;
        text-align: center
    }
}
@media only screen and (max-width: 620px) {
    /*底部*/

    footer #footer-bottom div .row .footer-top-display{width:100%;text-align: center;}
    footer .footer-bottom-display {
        display: block;
        width: 100%;
        text-align: center;
        margin-top: 5px;
    }
    .footer-midden-display {
        width: 100%;
        text-align: center
    }
    .list-group {
        padding:0;
        margin-bottom: 0;
    }
}
@media only screen and (max-width: 500px) {
    /*导航*/
    #nav div .text-box #button button img{display: none;}
    #nav .text-box #button{flex-wrap:wrap;max-width:60px;}
    #nav .text-box #button button{background:none;color:#337ab7;border:none;}
    .navbar-toggle{margin-right:9px;padding:7px;}

    /*底部*/
    footer .footer-top .row div ul li:first-child{
        font-size: 1.2rem;
        padding-top:1%;
    }
    footer .footer-top .row .list-group li div img,footer .footer-top .row .list-group li div img+p{
        padding:0;
    }
    footer #footer-bottom{padding:5px;}
    footer #footer-bottom div .row ul li{font-size:1.3rem;}
    footer #footer-bottom div .row .footer-bottom-display{display: block;}
    footer #footer-bottom div .row .footer-top-display{display:none;}
}
@media only screen and (max-width: 325px) {
    #navbar-collapse ul li a{padding:5px;}
}