> the way modern web apps are developed.

I suppose that could have been worded differently, I meant it in the context of the original person mentioning HTML is their least favorite part of web design.

For your 0.01% of us who use all that jazz HTML-first design feels like a step backwards and especially trying to inject application logic comes off as a ham-handed method of design when compared with a logic-first design that spits out and manages the UI (HTML/CSS).

I'm not sure what CSS preprocessors has to do with that, but I'm also confused - what is your opinion of Mavo?