[HTML] How can I remove default font style from only a certain text in my blog?

I have a Tumblr blog and I’ve totally customized the blog’s theme. That is done by modifying the theme’s html code. I know some html, enough to get myself around, let’s say…
Anyway, I have a “problem” I cannot solve:
Close to the header, I want to put a small text, formatted “plain and small”. But I guess the default font style for the header is a big title style. And after numerous tries, I can´t get it the way I want it! The best I can do is this: http://img198.yfrog.com/img198/8008/tumblrn.jpg [highlighted in red]. As you can see, there still is a shadow and some other effect added to the text on the left, and I want to make it like the text after it (which is in an iframe, and that’s why the font is “normal”).
So what can I do? Is there a way to just remove the default font style for a part of the page?

Thank you very much for any help!
-x3m