body {
    margin: 0;
    padding: 0;
    background-color: #f0f0f0;
}

#game-container {
    position: relative;
    margin: auto;
    width: 800px;
    height: 600px;
}

canvas {
    background-color: #333;
    display: block;
    margin: auto;
}

#score {
    position: absolute;
    top: 10px;
    left: 10px;
    color: #000;
    font-size: 20px;
    font-weight: bold;
}