Critique CSS for DocBook Content

Hello All,

With valuable suggestions from David Dorward, I have improved a CSS
for my site. The site consists of documents which are mostly text
based. Here are some sample documents from the website, that use the
updated CSS.

http://tinyurl.com/yu3j8
http://tinyurl.com/2zwoh

More documents here -> http://www.xml-dev.com/blog/#88

Critique on the CSS is welcome.

Thanks
Saqib Ali
http://validate.sf.net