.shutter_main{
    width: 100%;
    height: 100%;
    overflow: hidden;
    position: relative;
    user-select: none;
}
.shutter_room{
    width: 100%;
    height: 100%;
    overflow: hidden;
    position: absolute;
    cursor: pointer;
    z-index: 20;
}
.shutter_close{
    width: 60px;
    height: 60px;
    overflow: hidden;
    position: absolute;
    cursor: pointer;
    right: 25px;
    top: 50%;
    border-radius: 50%;
    transform: translate(0%, -50%);
    background: rgba(0,0,0,0.5);
    z-index: 100;
    color: rgba(255,255,255,0.8);
    text-align: center;
    line-height: 60px;
    font-size: 40px;
    font-family: Arial;
}
.shutter_close::before{
    content: "×";
}
.shutter_head{
    width: 180px;
    height: 42px;
    overflow: hidden;
    position: absolute;
    cursor: pointer;
    z-index: 100;
    left: 50%;
    top: 28px;
    border-radius: 4px;
    background: rgba(0,0,0,0.5);
    transform: translate(-50%, 0%);
    line-height: 42px;
    text-align: center;
    font-size: 20px;
    color: rgba(255,255,255,0.7);
}
.shutter_layer{
    width: 100%;
    height: 100%;
    overflow: hidden;
    position: absolute;
}
.shutter_videomask{
    width: 100%;
    height: calc(100% - 80px);
    overflow: hidden;
    position: absolute;
    z-index: 20;
    background: rgba(255,255,0,0);
}
.shutter_layer img{
    position: absolute;
    left: 50%; top: 50%;
    transform: translate(-50%,-50%);
    pointer-events: none;
}
.shutter_layer video{
    position: absolute;
    left: 50%; top: 50%;
    transform: translate(-50%,-50%);
    z-index: 10;
}