body {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
    background-color: #f0f0f0;
}

#game-container {
    position: relative;
}

#game-canvas {
    border: 1px solid #000;
}

#controls {
    position: absolute;
    bottom: 10px;
    left: 50%;
    transform: translateX(-50%);
}

#controls button {
    margin: 5px;
    padding: 10px 20px;
    font-size: 16px;
}