How do I stylise certain fields on a card?

[clear tiger]

I want to make it so the word is bigger and in a different font to the sentence so it stands out bigger but I've been searching to figure out how, but don't understand 🙏 Thanks

Also while I'm asking about this, I can't make it basic (and reversed) cards without removing my extra fields. I tried looking online to see how I can get reveresed versions of the card, but I didn't understand any of the explanations