.module {
    width: 100%;
    position: relative;
}
a {
    text-decoration: none;
    color: inherit;
}
.page-intro {
    height: 420px;
}
.page-intro.center {
    text-align: center;
}
.page-intro.page-case {
    background: #FFFFFF;
    background-image: url(//cdn.names.org.cn/portal/img/SuccessCase/case-bg.png);
    background-repeat: no-repeat;
    background-size: contain;
    background-position: center;
}
.module>.title {
    text-align: center;
    padding-top: 50px;
    font-size: 0;
}
.page-intro .title {
    font-size: 44px;
    color: #FFF;
    font-weight: 500;
}
.page-intro.page-case .title {
    padding-top: 130px;
    color: #3B426B;
    margin-bottom: 20px;
}
.page-intro.page-case .sub-title {
    font-size: 18px;
    color: #3B426B;
}
.classify_nav{
    text-align:center;
    border-top: 1px solid #E6E7FB;
    height: 90px;
    background: #FFFFFF;
    padding:25px 0;
}
.nav-pills>li.active>a, .nav-pills>li.active>a:focus, .nav-pills>li.active>a:hover {
    color: #fff;
    background-color: #0071f3;
}


.tab-content .active{
    width:1300px;
    display:flex;
    /*justify-content:center;*/
    margin:20px auto;
    flex-wrap:wrap;
    text-align:center;
}


.cases-item_video {
    position:relative;
    width: 300px;
    border-radius: 4px;
    cursor: pointer;
    box-shadow: 0 1px 10px 0 rgb(0 0 0 / 5%);
    transition: box-shadow .3s;

    margin:20px 10px;
}
.cases-item_video .play {
    position: absolute;
    z-index: 10;
    width: 38%;
    left: 30%;
    top: 38%;
}
.video_cover{
    width:100%;
    height:100%;
}

#paging{
    text-align:center;
}

.classify_nav li a{
    position: relative;
    display: block;
    padding: 5px 14px;

    border-radius: 30px;
    margin-right: 26px;
}