body {
    margin: 0;
    overflow: hidden;
}

#score {
    position: absolute;
    top: 10px;
    left: 10px;
    color: white;
    font-family: sans-serif;
    font-size: 24px;
}

#game-over {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-family: sans-serif;
    font-size: 48px;
    text-align: center;
}

#game-canvas {
    display: block;
}