Main menu css code

Hi, please can someone help me… I have been fiddling around with the code for the main menu on ‘stylesheet’ as I wanted the menu to be larger and centered on the page, however I appear to have totally screwed up the whole site so none of my pages show. Can you give me the original css code for the main menu so I change it back? Thank you! website, [email address moderated – these forums do not provide support via email]