I just wondered, since css3 allows for multiple background images, I figured out, gsap is able to animate those multiple images individually in some kind.
for a project I'd like to have this feature. (there should be multiple elements in the background, which then are animated each one individually, do create some kind of parallax-effect for the background)
Have a look below (you have to click the div to start the animation)
sadly, for now for the background-position theres only one x and one y property to edit.