I have a pretty annoying problem which I can't figure out.. When I'm doing the user interface in app inventor, I want to set a green background for example (no problems there). Background works without a problem, but then when i add anything (for example button) to the screen, it changes as much background as button takes. So then basiclly I have like 3 quarters of the screen green, then on top is the button and around it white background. I want the background to stay the same even when I'm adding things later. This is only the case on the phone, in browser it shows like it should, but on the phone it does that. So, please if anyone knows a solution, i would be really thankful.