body {
    background-color: darkgray;
}

#container {
    position: absolute;
    top:50%;
    left:50%;
    transform: translate(-50%, -50%);

    filter: drop-shadow( 0 0 1rem rgba(0, 0, 0, 0.5) );
    text-align: center;

    font-family: sans-serif;
}

#gc { border-radius: .25rem }

footer {
    font-family: sans-serif;
    position: fixed;
    bottom:1rem;
    left:1rem;
}

#restart {
    border: solid 1px black;
    border-radius: .25rem;
    background-color: white;
    font-family: sans-serif;
    margin: .5rem;
    padding: .5rem;

    display: block;
    
    position: relative;
    left:50%;
    transform: translateX(-50%);
}