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

#game-container {
    margin: 50px auto;
    padding: 20px;
    background-color: #fff;
    border: 1px solid #ccc;
    border-radius: 10px;
    width: 300px;
}

button {
    margin: 10px;
    padding: 10px;
    font-size: 16px;
}