.dtxx_list li{
    width: 239px;
    height: 132px;
    float: left;
    margin-top: 25px;
    margin-right: 10px;
    margin-bottom: 10px;
}

.jbxx_list li{
    width: 239px;
    height: 132px;
    float: left;
    margin-top: 15px;
    margin-right: 10px;
    margin-bottom: 10px;
}

@media screen and (max-width: 736px) {
    * {
        /*margin:0;*/
        padding: 0;
        list-style: none;
        text-decoration: none;
        font-family: "微软雅黑", "Helvetica Neue", Helvetica, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif;
        /*font-family: "微软雅黑",Arial;*/
    }

.dtxx_list li{
    width: 100%;
     margin-top: 45px;
}

.jbxx_list li{
    width: 100%;
    margin-top: 25px;
}

}