Code Boxes Issue on Sass exercises

Hello there,

So, I’ve been having and issue with the Code Boxes in the instruction panel (left-hand panel) of the Sass exercises in the Front-end dev section.

I’m running the dark theme and the text in the code boxes print in black. It doesn’t seem to be a known issue so I’ll put it there.

I am running the site on a 70.0.1 Firefox browser (tried with no add-ons, same result), on a High-Sierra OS X 10.13.6