@media screen and (max-width:600px){
    /* 顶部导航栏 */
    .header {
        z-index: 1000;
        position: fixed;
        top: 0px;
        left: 0px;
        width: 1504px;
        height: 80px;
        background-color: rgb(255, 255, 255);
    }
    /* 导航栏图片 */
    .header .tupian {
        float: left;
    }
    .header .tupian img {
        margin-left: -50px;
    }
    /* 导航条 */
    .header .search {
        float: left;
        width: 22%;
        height: 80px;
    }
    /* 导航栏搜索框 */
    .search input {
        outline: none;
        float: left;
        margin-left: 10px;
        margin-top: 20px;
        /*文本框里的文字首行缩减15像素*/
        padding-left: 15px;
        width: 200px;
        height: 35px;
        color: #c2bfbf;
        border: 2px solid red;
        border-collapse: collapse;
        background-color: #fff;
    }
    .search a {
        margin-top: 20px;
        width: 50px;
        height: 39px;
        background-color: red;
        display: inline-block;
    }
    /* 伪元素制作搜索图标 */
    .search a::after {
        line-height: 40px;
        margin-left: 10px;
        color: #fff;
        font-family: 'icomoon';
        font-size: 24px;
        content: '\e986';
    }

    /* 背景图片 */
    .background {
        float: left;
        margin-top: 80px;
        width: 1504px;
        height: 368px;
        background-image: url(../images/img/beijin.png);
    }

    /* 分类信息部分 */
    .classify {
        float: left;
        width: 1504px;
        height: 1400px;
    }
    .classify .center {
        margin: 0 auto;
        width: 70%;
        background-color: brown;
    }
    .classify .zuo {
        float: left;
        width: 30%;
    }
    .classify .zuo .pull {
        margin: 40px auto;
        width: 240px;
    }
    .classify .zuo .pull .biaoti {
        display: block;
        width: 240px;
        height: 50px;
        text-align: center;
        background-color: rgb(0, 119, 211);
        border-radius: 8px;
        line-height: 50px;
        color: #fff;
        font-weight: 700;
        font-size: 20px;
        font-family: Arial, Helvetica, sans-serif;
    }
    .classify .zuo .pull .biaoti::after {
        vertical-align: top;
        font-family: 'icomoon';
        font-size: 30px;
        content: '\e901';
    }
    .classify .zuo .pull select {
        font-size: 16px;
        padding-left: 15px;
        width: 240px;
        height: 50px;
        margin-top: 10px;
        border: 0px;
        border-collapse: collapse;
    }
    .classify .zuo .pull select option {
        font-size: 18px;
    }
    
    
    
    
    
    
    
    
    
    
    .classify .you {
        float: left;
        width: 70%;
    }
    .classify .you .you_1 {
        width: 100%;
        height: 40px;
        margin-top: 45px;
        background-color: rgb(0, 119, 211);
    }
    .classify .you .you_1 h4::before {
        vertical-align: top;
        margin-right: 10px;
        font-family: 'icomoon';
        font-size: 20px;
        content: '\e908';
    }
    .classify .you .you_1 h4 {
        margin-left: 30px;
        line-height: 40px;
        color: #fff;
        font-family:initial;
    }
    
    .classify .you table {
        table-layout: fixed;
        margin-top: 10px;
        width: 100%;
        border-style: none;
    }
    .classify .you table td {
        border-style: dotted;
    }
    .classify .you table thead td:first-of-type {
        width: 18%;
    }
    .classify .you table thead td:nth-of-type(2) {
        width: 49%;
    }
    .classify .you table thead td {
        height: 40px;
        font-weight: 700;
        padding-left: 20px;
    }
    .classify .you table tbody tr td {
        height: 35px;
        padding-left: 20px;
    }
    .classify .you table tbody tr td {
           text-overflow:ellipsis;
           white-space:nowrap;
        overflow:hidden;
    }
    .classify .you .pagebreak {
        margin-top:10px;
        font-size:16px;
    }
    .classify .you .pagebreak A {
        display:inline-block;
        width:80px;
        height:30px;
        color:#FFF;
        line-height:30px;
        border-radius: 20px;
        background-color:rgb(243, 39, 39);
        margin-left:20px;
    }

    /* 底部 */
    .footer {
        margin-top: 15px;
        float: left;
        width: 1504px;
        height: 250px;
        background-color: rgb(30, 30, 30);
    }
    .footer .center {
        margin: 0 auto;
        width: 60%;
        height: 250px;
    }
    .footer .center ul {
        float: left;
        width: 500px;
    }
    .footer .center ul li {
        margin-left: 20px;
        line-height: 40px;
        color: #fff;
    }
    /* 只选择第一个li */
    .footer .center ul li:first-child {
        font-weight: 700;
        font-size: 19px;
        color: #fff;
    }
    .footer .center ul li span {
        margin-right: 10px;
        font-size: 16px;
        font-family: 'icomoon';
    }
    .footer .center img {
        float: right;
        margin-right: 30px;
        margin-top: 20px;
        width: 100px;
        height: 100px;
    }
    .xian {
        float: left;
        width: 900px;
        height: 1.5px;
        background-color: #fff;
    }
    .footer p {
        float: left;
        margin-top: 30px;
        margin-left: 150px;
        color: #fff;
    }
}