Here is what I’ve got going so far in terms of custom mobile breakpoints: http://pastebin.com/YG1N4fVj
I’m using VW units in this example for H1 and H2 headings, but I still need to add the REM units I want to use on body text throughout the site. I am using several different font sizes in various sections of the site, and getting these to look good across a diverse range of mobile devices is challenging when working in PX only.
Oh, I BTW, I meant to say, ‘can you make an option for REM units’ (not EM). I prefer REM because it’s relative to the font sized set for the body rather than each separate element. This way, all we need to do is set the body font size in the mobile breakpoints CSS and the rest of the special font sizing takes care of itself.