@media screen and (max-width: 1920px) {
    body{
        position: relative;
    }
    .banner{
        width: 100%;
    }
    .banner img{
        width: 100%;
        height: 100%;
    }
    .banner_button{
        width: 107px;
        position: absolute;
        right: 10%;
        top: 43%;
        z-index: 999;
    }
    .zhezhao{
        width: 100%;
        height: 100%;
        position: absolute;
        top: 0;
        left: 0;
        background-color: #000000;
        opacity: 0.6;
        display: none;
        z-index: 999999999999;
    }
    .myskin{
        background-image: url("/static/home_news/img/tanchuceng.png");
        background-position: top;
        background-repeat: no-repeat;
        background-size: cover;
        position: fixed;
        width: 700px;
        height: 725px;
        left: 50%;
        margin-left: -350px;
        z-index: 99999999999999;
        display: none;
        top: 10%;
    }
    .swiper1{
        position: relative;
    }
    .banner_button button{
        height: 38px;
        font-size:20px;
        font-family:SimHei;
        font-weight:400;
        color:rgba(255,255,255,1);
        line-height:28px;
        float: left;
        margin: 21px 0!important;
        padding: 0 17px;
    }
    .cases2{
        overflow: hidden;
        position: relative;
        top: -60px;
    }
    .cases_xia{
        width: 80%;
        overflow: hidden;
        margin: auto;
        padding-bottom: 16px;
    }
    .cases_xia div{
        float: left;
    }
    .cases_xia_1{
        width: 78%;
    }
    .cases_xia_2{
        width: 18%;
        float: right!important;
    }
    .cases_xia_2 img{
        width: 100%;
    }
    .cases_xia_1 h2{
        font-size:20px;
        font-family:Microsoft YaHei;
        font-weight:400;
        color:rgba(51,51,51,1);
        line-height:28px;
        overflow: hidden;
        text-overflow:ellipsis;
        white-space: nowrap;
    }
    .cases_xia_1 p{
        font-size:14px;
        font-family:Microsoft YaHei;
        font-weight:400;
        color:rgba(51,51,51,1);
        line-height:28px;
        overflow: hidden;
        text-overflow:ellipsis;
        white-space: nowrap;
    }
    .xia_20{
        width: 20%;
    }
    .cases_tal{
        width: calc(100% - 32px);
        background:rgba(255,255,255,1);
        box-shadow:0 -3px 25px 1px rgba(31,36,140,0.22);
        border-radius:6px;
        margin: 0 16px;
        padding: 42px 2% 42px 2%;
    }
    .cases3{
        background-color: #F9F9F9;
        margin-top: -50px;
    }
    .cases3 .cases-nav{
        width: 1200px;
        margin: auto;
        margin-top: 40px;
    }
    .cases3 .cases-nav:after{
        clear:both;
        content:'';
        display:block;
        width:0;
        height:0;
        visibility:hidden;
    }
    .cases-title h1{
        text-align: center;
        font-size:40px;
        font-family:Microsoft YaHei;
        font-weight:400;
        color:rgba(51,51,51,1);
        line-height:28px;
        padding-top: 51px;
    }
    .cases3 .cases-nav .cases-top .nav{
        text-align: center;
        position: absolute;
        width: 220px;
        top: -126px;
        left: -37%;
    }
    .cases3 .cases-nav .cases-bottom .nav{
        text-align: center;
        position: absolute;
        width: 220px;
        bottom: -126px;
        left: -37%;
    }
    .cases3 .cases-nav .cases-bottom .nav h2 {
        padding-top: 57px;
    }

    .cases3 .cases-nav .nav .cases_xia2{
        background-color: #ffffff;
        height: 169px;

    }
    .cases-nav1{
        overflow: hidden;
    }
    .cases-nav2{
        width: 1125px;
        margin: auto;
        position: relative;
        padding: 145px 0;
    }
    .cases-nav2:after{
        clear:both;
        content:'';
        display:block;
        width:0;
        height:0;
        visibility:hidden;
    }
    .cases_xia2 h2{
        font-size:18px;
        font-family:Microsoft YaHei;
        font-weight:400;
        color:#333333;
        line-height:24px;
        padding-top: 30px;

    }
    .cases_xia2 p{
        font-size:14px;
        font-family:SimHei;
        font-weight:400;
        color:#666666;
        padding-bottom: 67px;
        line-height:24px;
        width: 80%;
        margin: auto;
    }
    .cases_yuan{
        background: #4581FB;
        width: 83px;
        height: 83px;
        display: flex;
        align-items: center;
        text-align: center;
        margin: auto;
        border-radius: 50%;
        position: relative;
    }
    .cases_xian{
        width: 2px;
        height: 60px;
        background: rgba(69,129,251,1);
        margin: auto;
    }
    .cases-top,.cases-bottom{
        float: left;
        width: 125px;
        position: relative;
        cursor: pointer;
    }
    .cases-bottom{
        margin-top: 143px;
        position: relative;
    }
    .cases_dian{
        width:100%;
        height:24px;
        background:rgba(69,129,251,1);
        margin: auto;
        text-align: center;
    }
    .cases_xia3{
        margin-top: -41px;
    }
    .cases_yuan img{
        margin: auto;
    }
    .cases-nav3{
        width: 1025px;
        margin: auto;
        overflow: hidden;
        margin-top: -75px;
    }
    .cases-nav3 .nav{
        width: 25%!important;
    }
    .cases-nav3 .cases_xia2 h2{
        padding-top: 54px!important;
    }
    .cases-nav3 .cases_xia2 p{
        padding-bottom: 46px;
    }
    .cases-button{
        text-align: center;
    }
    .cases-button p{
        background-color: #4581FB;
        font-size:19px;
        font-family:SimHei;
        font-weight:bold;
        color:rgba(255,255,255,1);
        line-height:24px;
        padding: 15px 100px;
        margin: 54px 0 54px 0;
    }
    .cases4{
        width: 100%;
        overflow: hidden;
        margin-bottom: 58px;
        position: relative;
    }
    .cases4_left{
        text-align: right;
        color: #ffffff;
        padding: 59px 86px 0 0;
    }
    .cases4_left h2{
        font-size:38px;
        font-family:Microsoft YaHei;
        font-weight:400;
        color:rgba(255,255,255,1);
        margin-bottom: 39px;
    }
    .cases4_left li{
        height: 86px;
        margin-bottom: 55px;
    }
    .cases4_left li h3{
        font-size:20px;
        font-family:Microsoft YaHei;
        font-weight:bold;
        color:rgba(255,157,4,1);
        line-height:28px;
        margin-top: 19px;
        margin-bottom: 18px;
    }
    .cases4_left li p{
        font-size:16px;
        font-family:Microsoft YaHei;
        font-weight:400;
        color:rgba(255,255,255,1);
        line-height:20px;
        width: 55%;
        float: right;
        text-align: left;
    }
    .cases4_left{
        background-image: url("/static/home_news/img/tuanduibeijing.png");
    }
    .cases4_right{
        text-align: left;
        padding: 59px 0 0 86px ;
        background-color: #F9F9F9;
    }
    .cases4_right h2{
        font-size:38px;
        font-family:Microsoft YaHei;
        font-weight:400;
        color:rgba(51,51,51,1);
        float: left;
        margin-bottom: 38px;
    }
    .cases4_right div:after{
        clear: both;
        content: "";
        display: block;
        width: 0;
        height: 0;
    }
    .cases4_right h3{
        float: left;
        font-size: 20px;
        font-family: Microsoft YaHei;
        font-weight: 400;
        color: rgba(102,102,102,1);
        line-height: 45px;
        margin-left: 200px;
    }
    .cases4_right ul li{
        overflow: hidden;
    }
    .cases4_right ul li div{
        float: left;
        position: relative;
    }
    .vases4_right_left{
        text-align: center;
        margin-top: 25px;
    }
    .vases4_right_left img{
        margin-bottom: 21px;
        width: 60px;
        height: 60px;
        border-radius: 50%;
    }
    .vases4_right_left p{
        font-size:18px;
        font-family:Microsoft YaHei;
        font-weight:400;
        color:rgba(51,51,51,1);
    }
    .vases4_right_right{
        margin-left: 15px;
        width: 430px;
    }
    .p2_jiao{
        width:0;
        height:0;
        border-top:10px solid transparent;
        border-bottom:10px solid transparent;
        border-right:10px solid #4581FB;
        position: absolute;
        left: -10px;
        top: 13px;
    }
    .vases4_right_right .p2{
        position: relative;
        background-color: #4581FB;
        padding: 15px;
        border-radius: 4px;
        color: #ffffff;
        display: -webkit-box;
        -webkit-box-orient: vertical;
        -webkit-line-clamp:5;
        overflow: hidden;
    }
    .vases4_right_right div{
        padding: 10px;
        background-color: #4581FB;
        background-repeat: no-repeat;
        width: 400px;
        border-radius: 10px;
    }
    .vases4_right_right span{
        width: 0;
        height: 0;
        border-top: 10px solid transparent;
        border-bottom: 10px solid transparent;
        border-right: 10px solid #4581FB;
        display: block;
        position: absolute;
        top: 12px;
        left: -10px;
    }
    .vases4_right_right .p_xm,.vases4_right_right .p_zw{
        float: left;
    }
    .p_zw{
        max-width: 300px;
        overflow: hidden;
        text-overflow:ellipsis;
        white-space: nowrap;
        color: rgba(102, 102, 102, 1);
    }

    .vases4_right_right div p{
        font-size:16px;
        font-family:Microsoft YaHei;
        font-weight:400;
        color:rgba(255,255,255,1);
        line-height:20px;
        overflow: hidden;
        text-overflow: ellipsis;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
    }

    .vases4_right_right  p{
        margin: 10px;
    }
    .vases4_right_right .p1{
        font-size:14px;
        font-family:Microsoft YaHei;
        font-weight:400;
        color:rgba(153,153,153,1);
        line-height:20px;
    }
    .vases4_right_button2{
        text-align: center;
        width: 700px;
    }
    .vases4_right_button2 button{
        background-color: #4581FB;
        font-size: 19px;
        font-family: SimHei;
        font-weight: bold;
        color: rgba(255,255,255,1);
        line-height: 24px;
        padding: 15px 50px;
        margin: 54px 0 54px 0;
        height: 50px!important;
    }
    .cases4_center{
        position: absolute;
        left: calc(50% - 43px);
        top: 81px;
    }
    .cases4_center div{
        width: 86px;
        height: 86px;
        margin-top: 55px;
    }
    .cases5 h2{
        color: #333333!important;
    }
    .cases5_center{
        width: 1200px;
        overflow: hidden;
        margin: auto;
        text-align: center;
        margin-top: 20px;
    }
    .cases5_center .div_1{
        margin: 15px;
        position: relative;
        height: 300px;
        cursor: pointer;
    }
    .cases5_center .div_2{
        display: none;
        width: 100%;
        height: 100%;
        background-color: #000000;
        opacity: 0.8;
        position: absolute;
        left: 0;
        top: 0;
    }
    .cases5_center .div_2 .img_2{
        margin: 25px 0;
    }
    .cases5_center .div_2 p{
        font-size:14px;
        font-family:Microsoft YaHei;
        font-weight:400;
        color:rgba(255,255,255,1);
        line-height:36px;
        width: 80%;
        margin: auto;
        display: -webkit-box;
        -webkit-box-orient: vertical;
        -webkit-line-clamp: 3;
        overflow: hidden;
    }
    .cases5_center .div_2 h3{
        color: #ffffff;
        margin: 40px 0 10px 0;
        font-size:18px;
        font-family:Microsoft YaHei;
        font-weight:400;
        color:rgba(255,255,255,1);
        line-height:24px;
    }
    .cases5_center .div_1 .p1{
        font-size:18px;
        font-family:Microsoft YaHei;
        font-weight:400;
        color:rgba(255,255,255,1);
        line-height:36px;
        background-color: #000000;
        opacity: 0.8;
        position: absolute;
        bottom: 0px;
        width: 100%;
    }
    .div_1 .img_1{
        width: 100%;
    }
    .cases5_center .img_1{
        width:100%;
        height: 100%;
    }
    .dongtai2 p {
        margin-left: 70px!important;
    }
}

@media screen and (max-width: 1540px) {

    .cases_xia{
        width: 100%;
    }
    .cases3 .cases-nav{
        width: 90%;
    }
    .cases-nav2{
        width: 100%;
    }
    .cases-top, .cases-bottom{
        width: 11%;
    }
    .cases3 .cases-nav .nav .cases_xia2{
        margin: 0;
    }
    .cases5_center{
        width: 100%;
    }
}

@media screen and (max-width: 750px) {

}