Created by: andresgalante
After reading this issue #23982 (closed) I've added a note on the docs related to how to set font-size-base units.
My guess is that other users will try to set font size base in px and they'll get a sass error too.
I've also changed the responsive typography example from pxs to rems to help copy-and-paste users get an accessible website.
What do you think?