Bigger Font Size

There is something that i did other then inserting the izea rank code verification that made the font bigger. I can not adjust it to how it was before. I do not know anything about templates, etc. I tried to undo the changes I made but it's still the same. So now, when I write a post I make sure I chose the smaller font not the normal anymore. Got tired of it, maybe it's time for a new template/design. But where is the time, right? As long as you can still read my blog, I'm fine.