.game-container {
    background: #f0f0f0;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
    display: inline-block;
}

#tetris {
    border: 2px solid #333;
    border-radius: 5px;
    display: block;
    margin: 0 auto;
}

#score,
#rows {
    font-size: 20px;
    margin: 10px 0;
    color: #333;
}

#message {
    font-size: 24px;
    margin-bottom: 20px;
    color: #6e8efb;
}

.no-canvas {
    color: red;
    font-size: 18px;
}

@media (max-width: 600px) {
    #tetris {
        width: 100%;
        max-width: 320px;
        height: 640px;
    }
}