I am working on jupyterlab 3 and want to add e.g.
.boxed { border: 2px solid black; margin: 10px auto; padding: 10px; border-radius: 10px; } and stuff like this to the style sheet. I want to use the class inside a markdown cell in a notebook, that i open in jupyterlab 3 interface. Is there a simple way or do i have do figure out writing a markdown extension?
custom.css, but thanks for the hint, if there will come jupyterlab 3 upgrade that would be great.