RT Chris Coyier
I wouldn't think most responsive interfaces just straight up *scale* themselves to the viewport. But sometimes!
This postcss-px-to-viewport PostCSS plugin is neat. You can just work in `px` at a fixed viewport, and automatically get the viewport units.
https://codepen.io/chriscoyier/pen/VwbLNPW?editors=0100

https://twitter.com/chriscoyier/status/1412203187679989760