Hey @tkykaren233 ,
yes unfortuntately, there are only the 3 headline styles right now and they cannot be customized for the whole doc. (More headline styles is also a bulletpoint in my Coda wishlist for 2024)
The only things you can do is
- customize the general font style in the page options which affects all text
- manually change colours or basic styling of each headline
In order to navigate you can activate “outline” in the page options which activates a table of contents.
Sorry for not having better news…