How to change main menu elements into not clickable?

Hey guys,

I would like to change my main menu a bit and I would like to change that not every parent element is clickable. I know that there is a quick css code like:

   pointer-events: none;
   cursor: default;

But it does not help me at all because I would need a class for each menu element. Is there a possibility to add classes to the menu elements? If yes how and if not, how can I tell in CSS that it should only do it to specific menu points?

Thanks

Regards,

Julien