Note: Content might be outdated!
Honestly, I have no idea how I could not have found this during research for my WCEU talk on plugin UI. Anyway, here it is: Frank Bültge’s WordPress Admin Style plugin—an amazing head start on your own plugin UI when you aim to employ default styles of WP Admin.
github.com/bueltge/WordPress-Admin-Style
Vielen Dank für den Hinweis zum Plugin! 💚
👍 👏 🤗