I'm redesigning a website. For certain content areas the layout is fine at my text size but screws up if I set the text any bigger. I often resize pages with Firefox, but the whole page resizes so the layout still works.
So, should I worry about users having larger text but the same CSS otherwise? I don't know how to test for this sort of thing. The site works fine with every browser I've looked at it with. I know some usability devices change layouts but don't they ignore normal styles altogether?