[Feature request] Support classes for both width and height

[mtirimie1]

Often I want to do something like w-max h-max or w-min h-min. It would be nice to be able to apply the same class in both directions

something like:

.span-full : {
width: 100% !important;
height: 100% !important;
}

I'd want this for span-full, span-max, span-min, span-screen, max-span-full, max-span-max, max-span-min, max-span-screen, min-span-full, min-span-max, min-span-min, min-span-screen

"span" was the best i could come up with, but i wonder if something like "wh" would line up with the syntax better