Note to the author: On the latest Firefox for mac, the code samples for some reason show up as black on grey text and are almost impossible to read. I've notic

Note to the author: On the latest Firefox for mac, the code samples for some reason show up as black on grey text and are almost impossible to read. I've noticed that if I remove 'Source Code Pro' from the font-family in the inspector for the code blocks, it looks fine.