Hello! How could I go about adding additional filter(s) to the Mercury theme, and narrowing the choice of filters to certain tags?
For instance, I would like a filter that only shows tags A, B, C and D, and a second set of filters that only shows X, Y, and Z. Ideally, I would like to be able to use both set of filters together (ie showing posts that contain tags C and Z).
How could I edit the theme files to do so?
