.student-info {
    padding-top: 35px;
    padding-bottom: 57px;
}

.student-info .info-tab {
    margin-bottom: 39px;
}

.student-info .info-tab span {
    position: relative;
    margin-right: 30px;
    display: inline-block;
    width: 144px;
    height: 49px;
    text-align: center;
    line-height: 49px;
    border-radius: 6px;
    background: #3AAB6A;
    font-size: 18px;
    color: #fff;
    cursor: default;
}

.student-info .info-tab span::after {
    content: "";
    position: absolute;
    bottom: -7px;
    left: 50%;
    margin-left: -7px;
    width: 14px;
    height: 7px;
    background: url(../img/tab-icon.png) center no-repeat;
    background-size: 100%;
    display: none;
}

.student-info .info-tab span.hover {
    background: #FD8F00;
}

.student-info .info-tab span.hover::after {
    display: block;
}

.student-info .info-cont {
    height: 937px;
}
.student-info .info-cont .cont-item{
    display: none;
}
.student-info .info-cont .cont-item ul li {
    float: left;
    width: 377px;
    margin: 0 34px 32px 0;
    text-align: center;
    border-radius: 10%;
}

.student-info .info-cont .cont-item ul li:nth-of-type(3n) {
    margin-right: 0;
}


.student-info .info-cont .cont-item .video-img {
    position: relative;
    width: 377px;
    height: 204px;

}
.student-info .info-cont .cont-item .video-img>img{
    width: 100%;
    height: 100%;
}
.student-info .info-cont .cont-item .video-img .cover {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0);
    display: flex;
}

.student-info .info-cont .cont-item .video-img .cover img {
    position: absolute;
    width: 46px;
    height: 46px;
    left: 50%;
    top: 50%;
    margin-top: -23px;
    margin-left: -23px;
}


.student-info .info-cont .cont-item .tit {
    height: 57px;
    background: #F3F3F3;
    line-height: 57px;
    font-size: 22px;
    font-weight: bold;
    color: #292929;
}



.info-cont .video-box{
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 12;
    display: none;
}
.info-cont .video-box .cover{
    position: absolute;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 20%);
}
.info-cont .video-box video{
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translateX(-50%) translateY(-50%);
    width: 800px;
    height: 400px;
    object-fit: fill;
    z-index: 13;
}