[melenaos]

Mobile-first is not mobile only design!

This article has completely misunderstand the term, mobile first it's the technical way of organizing the CSS to render the mobile viewport first and then the rest of the 'breakpoints'.

Mobile-first design has the advantage, over the desktop-first design, that it directly render first the mobile design and the cellphone experience is much faster and with less rearragning flickering.

Mobile-first doesn't have the corresponding disadvantages at the desktop browser since they tend to have a land line internet and much faster cpu and memory.

[omarfarooq]

I think they're assuming or taking the case of mobile first design with desktop as an afterthought.