erm which portion specifically? because it all looks ok to me.
I have the typical firefox configuration, and it all looks fine to me too……
I took a screenshot and uploaded it to:
http://es.tinypic.com/view.php?pic=213oh7t&s=6
(You can click on the image to see full-size view.)
The menu items (Home, A Parent Page, HTML Elements, etc.) are in italics in Firefox. They look normal (non-italic) in IE and Safari.
I suppose it is a special configuration issue for me, and probably not very WP specific, but I wondered how common it was, and if there was a way to prevent it via CSS.
Looks like it might be something within your browser config that’s causing this. It looks fine to me in the same version of Firefox. No italics in the top menu.
I doubt it’s a common effect and I’d also argue strongly against trying to over-ride it via CSS. Some user might have configured their browser this way because they want it like that.