Not sure what you mean. Just FYI : at least on Android phones, among FF, Chrome, Opera (and the default browser), Opera's text flow is the best by far. You can zoom in and read any article on any site, and it does just the right thing. There is honestly an element of fear when you use Firefox for the same thing: it's absolutely unpredictable what it will do when you zoom in. I can sympathize with the developers since the re-layout of a page, figuring out whether the user wants to zoom in on the text or the image, etc; may be quite difficult. Opera Mobile has seemingly perfected this over years and years.