.VideoItem {
    width: 90%;
    margin-bottom: 5%;
    margin-left: 5%;
}

.mask2 {
    position: fixed;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    display: none;
    top: 0px;
    left: 0px;
    z-index:999;
}

.VDetail {
    text-align: center;
    margin: auto;
    margin-top: 20%;
}

.a1 {
    text-align: center;
    margin: 0 auto;
    position: relative;
    padding-top: 20px;
    width: 80%;
    background-color: #ffffff;
    border-radius: 20px;
    padding: 5% 5%;
    height: 12rem;
}

.BtnClose1 {
    color: #5086fb;
    background-color: #ffffff;
    margin-left: 85%;
    position: absolute;
    border-radius: 100%;
    width: 50px;
    height: 50px;
    line-height: 50px;
    font-size: 20px;
    margin-top: -15%;
    cursor: pointer;
}