Exclude function / liquid on specific pages

[itmakessemse]

Hi,

We have added a header liquid (menu bar) to our webshop adfarm.nl. 

The menu is transparant on top, sticky when scrolling down the page. 

it looks great, but on product pages it doesn’t looks nice because you can’t see it without proper header image behind it.

That’s why we want the menu bar on product pages to be not transparant. Does someone has a custom css solution to fix this problem? Exclude product pages, so menu is not transparant on product pages.

thank you in advance.