You can check the notebooks here for examples: Introduction to Computational Thinking
If you download them, you can see the source code in Pluto.
I tried to copy the source code from Pluto (computational thinking) but it doesn’t work.
You have to write e.g. the following into a Pluto cell:
md""" !!! warning "This is a warning" my warning message """
Other supported box types are
!!! danger and
thank you so much!!