Mouse moves them. To stop them stop them in this order space, right arrow, left arrow. Sometimes fails. Sorry the order is space left right. I'm confused why your reading this.
All done by me, I made the red one first then copied and changed the color. for got to do the purples (there are two) and the whites (2 also) P.S sorry next time I will make a background P.P.S only took me an hour P.P.P.S I'm still confused why your still reading this