#domino-overlay {
    /*display: block;*/
    top: 0;
    display: none;
    position: fixed;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.8);
    z-index: 9999;
}

#domino-overlay-piece {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    display: inline-block;
}

#domino-overlay-piece .domino {
    transform: rotate(0deg) scale(2);
    transform-origin: center center;
    position: relative;
    z-index: 2;
}
#domino-overlay-piece .rotate {
    position: absolute;
    top: 50%;
    left: 100%;
    transform: translate(30px, -50%);
    font-size: 36px;
    cursor: pointer;
    z-index: 3;
}
#domino-overlay-piece .up {
    position: absolute;
    top: 0%;
    left: 50%;
    transform: translate(-50%, -110px);
    font-size: 36px;
    cursor: pointer;
    z-index: 3;
}

#domino-overlay-piece .down {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translate(-50%, 55px);
    font-size: 36px;
    cursor: pointer;
    z-index: 3;
}