What do you prefer for metrics, px or em?

Ems. They're relative to the font size used for their parent element, which makes it a lot easier to scale up or down the whole Page's font size by just changing the body's.

It's a bit like static positionning vs absolute positionning.

Em absolutely.

rem. Makes scaling more consistent across devices

@Dacexi but they're not supported across all common browsers

@paulwillyjean I mostly do electron stuff so it doesn't really matter. When I have to dev for cross browse I use px

@Dacexi why not ems?

@jAsE I accidentally pluralized em. Ems and em are the same thing. So 1em is still 1em.