Firefox dành cho Android Support Forum

When I'm going to full screen video - I'm got control buttons on the screen. It's happened 2 weeks ago and go on to this day. Phone control gistogram button's don't hide, I'm trying everything to fix it (( Some time it's don't showing, but not now - it's on the screen - no matter what sites or player on this site ((

I have to use Firefox to access my bank accounts as my version of chrome is no longer supported. However the magnification of the pages is too great in Firefox for me to use full page options. How can I reduce magnification of a Firefox page?