body {
    font-family: Arial, sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
    background-color: #f0f0f0;
}

#menu, #gameOver {
    text-align: center;
}

#gameCanvas {
    display: none;
    background-color: #fff;
    border: 1px solid #000;
}

#gameOver {
    display: none;
}