body {
    background: #111;
    color: #fff;
    font-family: Arial, sans-serif;
    text-align: center;
    margin: 0;
    padding: 0;
}

#game-container {
    margin-top: 40px;
}

canvas {
    background: #000;
    border: 3px solid #0f0;
}

#scoreBox {
    margin-top: 15px;
    font-size: 22px;
}

#restartBtn {
    margin-top: 20px;
    padding: 10px 20px;
    font-size: 18px;
    background: #0f0;
    border: none;
    cursor: pointer;
}

#restartBtn:hover {
    background: #4f4;
}