I doubt that this is at all possible without using group fields, and yes, existing data will be lost if you move fields into groups.
You cannot modify the HTML, of you change the DOM created by ACF more than likely you will break ACF.
You would need to override existing CSS used by ACF based on the element classes provided by ACF. Some style changes are possible, but in this case it would be extremely difficult and maybe impossible to accomplish.
Viewing 2 posts - 1 through 2 (of 2 total)
You must be logged in to reply to this topic.
Welcome to the Advanced Custom Fields community forum.
Browse through ideas, snippets of code, questions and answers between fellow ACF users