XHTML 1.0 Transitional document: problem with "there is no attribute "rel" "

This is my webpage: http://www.klayz.com/community/
As per this: http://validator.w3.org/check?verbose=1&uri=http://www.klayz.com/community/

It seems I have an error with that 'rel' attribute. And I sincerely don't understand how to fix it (the document is already a transitional one ). Can you please help me?

 

There are two embedded stylesheets in the body section. Move them into the head section and validate again.

 

I have thoese embedded ones becouse I'm including using PHP two things (a top navbar and a footer bar). And as far I'm including them in a lot of diffrent pages in my website, would be great for me to still be able to edit just one file's CSS and reflect the modifications all over my website.
In this case, what would you suggest me?

 

Try to move up the CSS in your base stylesheet in the header. Did you test it?