@media screen and (max-width: 1200px) {
    #head {
        display: none;
    }
    .logo,.search {
        display: none;
    }
    .nav {
        height: auto;
    }
    .h_nav {
        width: 100%;
        float: none;
    }
    #menu {
        float: none;
    }
    #header {
        background: url(../Images/navbj.png);

    }
    .nav li {
        width: 100%;
    }
    .nav .sec {
        display: none;
    }

    #header{
        display: none;
        position: fixed;
        top: 0;
        z-index: 999;
        left: 0;
        right: 0;
        height: 100%;
        background: #000!important;
        padding-top: 150px;
    }
    .header_open {
        display: block!important;
    }
    .flxf{
        height: 100%;
        background: #000!important;
        padding-top: 150px;

    }
    .proright .tab ul li {
        width: calc(96% / 2);
    }
    .nav li a{
        color: #ffffff;
    }
    .header_m {
        position: fixed;
        right: 10px;
        top: 100px;
        width: 40px;
        height: 30px;
        background-color: #d8d8d8;
        z-index: 999;
        cursor: pointer;
    }

    .header_m span {
        display: block;
        width: 80%;
        height: 2px;
        margin: 0 auto;
        background: #fff;
        position: absolute;
        left: 8%;
        top: 0;
        transition: .3s;

    }
    .header_m span:nth-child(1){top: 5px;}
    .header_m span:nth-child(2){top: 15px;}
    .header_m span:nth-child(3){top: 25px;}

    .header_on span:nth-child(1){top: 15px;transform: rotate(45deg)}
    .header_on span:nth-child(2){width: 0}
    .header_on span:nth-child(3){top: 15px;transform: rotate(-45deg)}
}
@media screen and (max-width: 768px) {
    .kf {
        display: none;
    }
    .proleft {
        width: 100%;
    }
    .proright {
        width: 100%;
    }
    .proright .tabli ul li {
        width: calc(96% / 2);
        margin: 0 1% 20px;
    }
    .proright .tabli ul {
        width: 100%;
    }
    .proright .tabli > a {
        width: 45%;
        float: left;
        margin-left: 1%;
    }
    .ppjj .abouttu {
        width: 100%;
    }
    .ppjj .aboutjj {
        width: 100%;
    }
    .ppjj .aboutjj {
        background:url(../Images/aboutbj.jpg) ;
    }
    .alzs_con h2 p {
        font-size: 20px;
    }
    .alzs_con h2{
        font-size: 18px;
    }
    .ppjj .aboutjj .about_wz h2 p {
        font-size: 18px;
    }
    .ppjj .aboutjj .about_wz h2 {
        font-size: 18px;
    }
    .ppjj .aboutjj .about_wz {
        width: 98%;
        margin: 1% auto;
    }
    .adv_tt h2 {
        font-size: 20px;
    }
    .adv_tt h3 {
        font-size: 18px;
    }
    .adv-box {
        display: none;
    }
    .new11 {
        width: 98%;
        margin: 0 1%;
    }
    .left {
        width: 100%;
    }
    .right {
        width: 100%;
    }
    .nav_foot p {
        width: 100%;
        overflow: hidden;
    }
    .nav_foot a {
        width: 30%;
    }
    .product_list li {
        width: calc(100% / 2 - 10px);
    }
    .news_list li span {
        width: 100%;
        text-align: left;
    }
    h3.title_bar {
        width: 98%;
        margin: 0;
    }
    #relate_n li {
        width: 98%;
    }
    .case_list li {
        width: calc(96% / 2);
    }
    .message {
        padding: 0;
    }
    #message_main tr th {
        width: 100%;
        text-align: left;
        display: block;
    }
    #message_main tr td {
        display: block;
        width: 100%;
        text-align: left;
    }
    .message #content {
        width: 94%;
    }
    .product_detail .img {
        width: 100%;
    }
    .product_detail .list {
        width: 100%;
    }
    .hzhb h2 p{
        font-size: 20px;
    }
    .news-box > h2 p{
        font-size: 20px;
    }
    .news-box > h2 {
        font-size: 18px;
    }
    .hzhb h2 {
        font-size: 18px;
    }
    #hb_indemo{
        width: 100%;
    }
    .product_listhb li{
        width: calc(48% - 2px);
        margin: 0 1% 15px!important;
    }
}