EW, EH, EMIN, & EMAX Units

via Element Queries

There are currently viewport-based units in CSS like vw , vh , vmin , and vmax which represent 1/100th of the viewport's width, height, shortest edge, or longest edge.

I am curious if having element-based CSS units could be useful. The % unit in CSS is already kind of like what ew would be like…but what would eh , emin , and emax units be like?

Element Width Units
Element Height Units
Element Min Units
Element Max Units