I recommend asking at https://projectdmc.org/support/theme/twentytwentythree/ so the theme’s developers and support community can help you with this.
Why is this a theme issue rather than a general full site editing issue? I re-posted another question on the there forum as you suggested and go not response. Are there no techniques for creating reusable blocks or block patterns except in the Twenty Twenty Three theme? Is it not possible to copy and paste blocks from one post or page to another?
Formatting overall is up to the theme.
In this particular case, there’s probably some CSS that can be applied in your child theme to keep the styling consistent across-site, and the theme’s developers and support community will be best suited to provide that.
I re-posted another question on the there forum as you suggested and go not response.
https://projectdmc.org/support/topic/space-between-items-3/ is where I last suggested you post there, and you got an excellent response that you even thanked them for: https://projectdmc.org/support/topic/space-between-items-4/