body {
    font-family: Arial, sans-serif;
    background-color: #f0f0f0;
}

#game-canvas {
    border: 1px solid #ccc;
    margin: 50px auto;
    display: block;
}

.score {
    font-size: 24px;
    font-weight: bold;
    margin-top: 20px;
    text-align: center;
}