While working on customizing my website template, I encountered an issue with the main menu on specific pages (the frontpage and some others are unaffected).
Some changes I made seem to have caused this problem, but I'm having trouble identifying the exact element responsible.
Despite spending over an hour using tools like Firebug and Chrome's coding tool, I haven't been able to pinpoint the source of the issue.
The first item in the menu has a different color, and the border-bottom of the "li" elements in the submenu is thicker than it should be at 1px.
I don't want to inundate you, but providing links may make it easier for you to see:
Frontpage: (menu = functional)
Problematic page:
--> You'll notice the difference immediately
The Contact, Services, and Tutorials pages display correctly; only the Product pages exhibit the issue.
Thank you immensely for your assistance.