Locate A WordPress Blog's CSS Stylesheet

Is it possible to view the CSS stylesheet associated with a WordPress blog? I've searched using different directory combinations, but all I get are 404 error pages.

This blog does some clever things with a table and I'd love to see how he set his stylesheet up.

Thanks for any help or advice

Its usualy located in the installed wp theme directory but even plugins can have css .. View the code of the site and retrive the css file urls. there might also be css code into the page.