Frontend built in UIkit 3. Backend is a modified version of what I did for HealthCARE Express.
I am using the top level pages to hold information only, so no design rows as children. Children are always sub pages. The page builder area is under a settings page that has children for things like the navigation menus, and themes. (The themes hold the page layouts, color schemes and uikit and theme components.)
Here is a video showing adding an intro section to a basic page. (Basic p