I'm very new to any sort of coding and would really appreciate some input. I've been following a guide to allow for subsets of collections on a page. I have succesfully added the code and tested it. Now I would like to edit the code to be able to change the font type and size. I'd also like to edit the margins around the pictures so there is more space on the bottom of each. Allowing more space between collections. I'll add links to what I'm referring to below.
Where should I be changing the font type and size?