.lil-gui {
    margin-left: auto;
    position: relative;
    z-index: 2;
}
#scene {
    position: relative;
    width: 100%;
    height: 500px;
}

#scene-stats > div {
    position: absolute !important;
}

#scene canvas {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
}

.lil-gui .widget {
    margin-bottom: 0 !important;
}