body {
    margin: 0;
    overflow: hidden;
    background: #000;
}

canvas {
    display: block;
    width: 100vw;
    height: 100vh;
}

#fps {
    position: absolute;
    top: 10px;
    left: 10px;
    color: white;
    font-family: monospace;
    font-size: 14px;
    pointer-events: none;
    display: none;
    z-index: 999;
}