@media screen and (max-width: 1920px) {
    .banner{
        width: 100%;
    }
    .banner img{
        width: 100%;
        height: 100%;
    }

    .layui-show:after {
        clear: both;
        content: "";
        display: block;
        width: 0;
        height: 0;
    }
    .yinying_img img {
        width: 120px;
        height: 120px;
        margin: 10%;
        border-radius: 50%;
    }
    .swiper1{
        position: relative;
    }
    .swiper-slide img{
        width: 100%;
        height: 100%;
    }
    .cases2{
        width: 1200px;
        margin: auto;
        overflow: hidden;
        margin-top: -117px;
    }
    .cases2 .layui-tab-brief>.layui-tab-title .layui-this{
        color: #333333;
    }
    .cases2 .layui-tab-brief>.layui-tab-title{
        background-color: #ffffff;
        padding: 15px;
        margin-bottom: 58px;
    }
    .cases2 .wrapper4_ul .layui-tab-title li{
        font-size:16px;
        font-family:Microsoft YaHei;
        font-weight:400;
        color:rgba(102,102,102,1);
        line-height:28px;
    }
    .cases2 .layui-tab-brief>.layui-tab-more li.layui-this:after,.cases2 .layui-tab-brief>.layui-tab-title .layui-this:after{
        border: none;
        border-radius: 0;
        border-bottom: 3px solid #000000;
        width: 35%;
        margin-left: 30%;
    }

    .cases_content_1{
        text-align: center;
        border-radius:4px 4px 0px 0px;
        margin: 15px;
    }
    .cases_content_1 .img1{
        width: 100%;
        max-height: 250px;
    }
    .cases_content_1 .img2{
        position: relative;
        bottom: -57px;
    }
    .cases_img1{
        width: 100%;
        height: 250px;
    }

    .cases_content_1 .p1{
        font-size:18px;
        font-family:Microsoft YaHei;
        font-weight:400;
        color:rgba(51,51,51,1);
        line-height: 42px;
        border:1px solid rgba(223,223,223,1);
        border-radius:4px;
    }
    .cases_content_1{
        position: relative;
        cursor: pointer;

    }
    .cases_content_1:hover .yinying{
        display: block;
    }
    .cases_content_1 .yinying{
        position: absolute;
        left: 0;
        top: 0;
        width: 100%;
        height: 100%;
        background-color: #000000;
        opacity: 0.8;
        display: none;
        cursor: pointer;
    }
    .cases_content_1 .yinying h2{
        font-size:18px;
        font-family:Microsoft YaHei;
        font-weight:400;
        color:rgba(255,255,255,1);
        line-height:24px;
        margin-top: 40px;
    }
    .cases_content_1 .yinying p{
        font-size:14px;
        font-family:Microsoft YaHei;
        font-weight:400;
        color:rgba(255,255,255,1);
        line-height:24px;
        margin: 10px 15%;
        text-align: left;
        display: -webkit-box;
        -webkit-box-orient: vertical;
        -webkit-line-clamp: 3;
        overflow: hidden;
    }
}

@media screen and (max-width: 1200px) {
    .cases2{
        width: 100%;
    }
}

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

}