In the cerneu.web.cern.ch website, we need to create FAQ pages with categories and sub-categories similar to the fieldsets module in Drupal 7. For this purpose, we used the FAQ Accordion style and I was able to create the categories and sub-categories and group the items accordingly. However, I would like to change the style of the categories and sub-categories title to for example (h2 and a certain color). Could you please help me with this?
The page in question is : https://cerneu.web.cern.ch/open-calls and I would like to make the category (e.g. Excellent Science in h2 and blue) and then sub-category (e.g. European Research Infrastructures) in h4 and black.
Thank you in advance,