Customize HTML/CSS on Public Share Pages?

Hi Nextcloud community,

I am a relatively new member to the tribe but I do have my instance up and running and its gone fairly smooth to this point and as I am getting to try out the apps and features I was wondering if it is possible either through an official method or some workaround to edit the individual Public share pages that are automatically generated.

I found the Theming app and the more detailed guidance in the manual but I was really hoping to edit individual aspects of the public share page(s) and not making a change to a color or border or whatever site wide.

I appreicate any help you might have. Thanks in advance!

mosi