I need some help please

We are having a problem with the fonts on our internet pages being so small we can hardly read them. We run two browsers and it is the same on both. Almost every page we download is small font even the ones we had bookmarked before. We noticed it about 2 weeks ago and do not know where to go to change it back even if it can be changed. These same pages are not small font on our work computers, so it has to be on this one alone. What can we do to fix this?

Thanks guys! It worked and now we can read them. We must have clicked this by mistake somehow and made it smaller. Again thanks for your help!

penny, you can also change font size by holding down the ctrl key and scrolling the mouse wheel.

Ok, thanks never heard of that but will try it.