body {
    margin: 0;
    background: #111;
    overflow: hidden;
    font-family: Arial, sans-serif;
}

#gameCanvas {
    background: #000;
    display: block;
    margin: 0 auto;
    image-rendering: pixelated;
}

#hud {
    position: fixed;
    top: 10px;
    left: 10px;
    padding: 10px 15px;
    background: rgba(0,0,0,0.5);
    color: white;
    font-size: 14px;
    border-radius: 6px;
}