Markdown Template / style like "read the docs" for documents

My preference is to keep the code hidden; both HTML and markdown
and switch to text edit mode if I need to access the code

Could you share the code?
I was looking for a Github warning style, but this could be a nice replacement.

Well, I’m actually using the code like vinschger has posted above - his last post on March 10 (sorry, I’m not allowed to paste the link to that post here)