#glass {
    position: absolute;
    border-radius: 50%;
    box-shadow: 0 0 0 7px rgba(255, 255, 255, 0.85), 0 0 7px 7px rgba(0, 0, 0, 0.25), inset 0 0 40px 2px rgba(0, 0, 0, 0.25);
    display: none;
    background-repeat: no-repeat;
    background-color: rgba(0,0,0,.6);
}