.page-pos{
    width: 100%!important;
}
.pos-header{
    width: 100%!important;
    height: 70px;
}
.section-pos{
   margin: 10px 0px;
}
.exhibit-text {
    line-height: 1.75em;
    text-indent: 2em;
}

.poc-title {
    text-align: center;
    font-weight: 700;
    font-size: 1.875vw;
    color: #1a1d39;
}

.poc-center {
    width: 75vw;
    margin: 1vw auto auto;
    display: flex;
    flex-wrap: wrap;
    border-radius: 1vw;
}

.poc-center-item {
    width: 29%;
    margin-right: 1%;
    height: 23.125vw;
    position: relative;
    margin-right: .3125vw;
    border-radius: 1vw;
    background: url("https://uc.hljstm.org.cn/webpublic/uploadfiles/article_img/20221110/202211101109266225.jpg");
}

.poc-center-item-mask {
    width: 100%;
    height: 100%;
    background: #1a64e0;
    position: absolute;
    border-radius: 1vw;
}

.poc-center-item-mask-title {
    font-weight: 700;
    font-size: 1.25vw;
    line-height: 1.5625vw;
    color: #fff;
    margin: 1.19792vw 0 .625vw;
    z-index: 1;
    text-align: center;
}

.poc-center-item-mask-desc {
    font-weight: 400;
    font-size: .83333vw;
    line-height: 1.5625vw;
    text-align: center;
    color: #fff;
    opacity: .84;
    /*max-width: 10.66667vw;*/
    margin-top: 1.875vw;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 4;
    overflow: hidden;
    margin: auto;
    margin-top: 4vw;
}

.liu_you {
    -webkit-text-size-adjust: auto;
  }

.exhibit-video {
    margin: auto;
    width: 75vw;
    z-index: 1;
}

.exhibit-video video {
    background-color: aqua;
    width: 75vw;
    height: 23.125vw;
    border-radius: 1.25vw;
}

.digital-technology-museum {
    display: flex;
    flex-wrap: wrap;
    width: 75vw;
    margin: 1vw auto auto;
}

.digital-technology-museum-item {
    width: 15.875vw;
    height: 23.38542vw;
    position: relative;
    cursor: pointer;
    background-color: #fff;
    border-radius: 1vw;
    background-size: cover;
    overflow: hidden;
    transition: all .2s linear;
    margin: 0 2.0vw 2.0rem 0;
}

.digital-technology-museum-item:hover {
    transform: scale(1.1);
    z-index: 99;
}

.digital-technology-museum-item-content {
    width: 15.97917vw;
    height: 8.4375vw;
    background-color: #ffffffe3;
    position: absolute;
    bottom: 0;
    left: 0;
    display: none;
}

.digital-technology-museum-item-content-title {
    /*font-weight: 900;*/
    font-size: 1.14583vw;
    color: #2e384a;
    text-align: left;
    margin: 0 0.8vw 0 0.8vw;
    margin-top: 1vw;
}

.digital-technology-museum-item-content-desc {
    font-weight: 500;
    font-size: .83333vw;
    margin: 0 0.8vw 0 0.8vw;
    line-height: 1.45833vw;
    text-align: left;
    color: #666;
    display: flex;
    align-items: center;
    margin-top: .78125vw;
}

.news-header {
    width: 100%;
    height: 70px;
    margin-top: 80px;
    /*position: absolute;*/
    /*top: 73px;*/
    background: linear-gradient(90deg, rgb(35 163 249 / 78%) 0%, rgba(68, 104, 230, .36) 100%);
    /*justify-content: center;*/
    line-height: 70px;
}
.news-header-content {
    width: 1200px;
    margin: auto;
}

@media screen and (max-width: 600px) {
    .page-pos{
        width: 100%!important;
    }
    .pos-header{
        width: 100%!important;
        height: 140px!important;
        margin-bottom: 40px!important;
    }
    .news-header {
        width: 100%;
        height: 140px;
        /*position: absolute;*/
        /*top: 120px;*/
        background: linear-gradient(90deg, rgb(35 163 249 / 78%) 0%, rgba(68, 104, 230, .36) 100%);
        justify-content: center;
        line-height: 140px;
        margin-top: 180px;
    }
    .news-header-content {
        width: 90%;
        margin: auto;
    }
    
    .exhibit-video {
        margin: auto;
        width: 95%;
        z-index: 1;
    }
    
    .exhibit-video video {
        background-color: aqua;
        width: 95%;
        height: 23.125vw;
        border-radius: 1.25vw;
    }
   
    .news-tab div a {
        color: #000;
        font-size: 30px!important;
    }
    .news-tab {
        display: flex;
        line-height: 140px;
    }
}