la-visitor/theme/scene.css

#container-controls {
    position: fixed;
    left: 20px;
    bottom: 20px;
}

#container-controls .container button {
    margin: 10px;
}

.space-render {
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0px;
    left: 0px;
}