#videoContainer {
    display: none; 
    position: absolute;
    top: 0%;
    left: 0%;
    width: 100%;
    height: 100%;
    background-color: #000;
    z-index: 100;
}

#videoContainer.show {
    display: block; 
} 

#myVideo {
    width: 100%;
    height: 100%;
    position: relative; 
}

#videoMask {
    width: 100%;
    height: 100%;
    position: absolute; /* 必须设置 */
    top: 0;
    left: 0;
    background-color: rgba(0,0,0,0);
    /* cursor: pointer;  */
    /* font-size: 200px; */
    color: #fcfcfc;
    z-index: 105;
}

#videoTank {
    display: none; 
    position: absolute;
    top: 0%;
    left: 0%;
    width: 100%;
    height: 100%;
    background-color: #000;
}

#videoTank.show {
    display: block; 
} 

#starVideo {
    width: 100%;
    height: 100%;
    position: relative; 
}

#videoHat {
    width: 100%;
    height: 100%;
    position: absolute; /* 必须设置 */
    top: 0;
    left: 0;
    background-color: rgba(0,0,0,0);
    /* cursor: pointer;  */
    /* font-size: 200px; */
    color: #fcfcfc;
    z-index: 5;
}