CSS Styling of Post Category in Navigation Menu

Hi,

I’m frantically trying to get my Catch Box theme to highlight my post category (listed on the primary navigation menu) in bold whenever associated posts for this category are being viewed within the browser.

At present I can’t seem to find an option, or manually edit the code, to get this to work. As you’ll all be aware the theme nicely does this for pages when they are being viewed in the browser, but I can’t find a way for making my post category listed in the primary navigation menu do this when any of the assigned posts I have created are being viewed.

Any suggestions would be hugely appreciated.

cmhardi1