Hi all,

First of all, I know there's plenty of similar threads, but non of them seems to help me.

www.ncorso.com.uy

That's my website, and Firefox don't apply the css styles.

Why is this happening?
I have some Mark-up problems that the xhtml validator told me, but I don't understand why those errors come up, because they seem to be fine for me.

I'd really appreciate if anyone could help me with this!
Thank you all for your time!