You seem to like advanced styling … Then it gets more complicated …
In Anki in the fields you write html. Each html element (tag) can be styled directly (as discussed in your other thread) or by general rules that apply to all elements of a certain type. For the latter you use css.
For a general introduction see
The problem is that depending on what you have in your fields you need different rules. So there might not be an answer that works in all cases (and instead you need some knowledge).
maybe useful: Custom Styles (font color, background colour, classes)
then google for something like “css indent first line” and use this in the classes add-on.