body {
    font-family: Arial, sans-serif;
    background: #222;
    color: #fff;
    text-align: center;
    margin-top: 50px;
}

#game {
    width: 600px;
    margin: 0 auto;
    padding: 20px;
    background: #333;
    border-radius: 8px;
    box-shadow: 0 0 15px rgba(0,0,0,0.5);
}

button {
    padding: 10px 20px;
    margin: 5px;
    cursor: pointer;
}