options for em and rem in "Customize and Download"

[stevenvachon]

px only is not responsive.

[mdo]

Please search next time—we've skipped on rems in v3 for the time being since v3 is just around the corner.

[stevenvachon]

What about em then?

[mdo]

Negatory—even worse given the inheritance and mathematical implications of nesting elements with ems.

Rems are also a no-go given they still need pixel fallbacks for IE8. And if we add rems for at least the fonts, then we need that for everywhere, and if that means double the code for around half our CSS. Not worth it.

[stevenvachon]

What about making IE8 support optional?

[mdo]

That won't happen for v3—it ships tomorrow.

[stevenvachon]

Very cool, but please be aware that there're a number of people somewhat upset about not having em and/or rem. Operating system level and browser level fonts affect things and px causes issues that must be overridden manually.

[cvrebert]

Believe me, we're aware. There's been a lot of griping about it in #6342 and various issues filed by folks who hadn't been following the discussion & the rem experimentation.

[stevenvachon]

I haven't been following, as they haven't. Sorry, and thank you