Small font in Mozzilla, Big in IE

[Sterlic]

I have a blog and I use
Blogger. About three days ago I noticed that in Internet Explorer, the
font in my posts were huge, I noticed that this late because I
primarily use Mozzila Firefox. I was wondering what I did to make the
font that huge in IE and not in Mozzila. I fixed it yesterday so the
font was normal in IE but tiny in Mozzila by changing the font size
percent. If you could just give me some information on how to fix this
it would be great.