#flappy-bird-game {
    position: relative;
    text-align: center;
    margin: 0 auto;
    max-width: 400px;
}

#gameCanvas {
    border: 2px solid #000;
    display: none; /* Hidden until start */
}

#startButton, #restartButton {
    padding: 10px 20px;
    font-size: 18px;
    background-color: #4CAF50;
    color: white;
    border: none;
    cursor: pointer;
    margin: 10px;
}

#startButton:hover, #restartButton:hover {
    background-color: #45a049;
}

#score {
    position: absolute;
    top: 10px;
    left: 10px;
    font-size: 24px;
    color: #fff;
    background: rgba(0, 0, 0, 0.5);
    padding: 5px 10px;
    border-radius: 5px;
}