Category "shorthand"

CSS border shorthand when each border has a different width

Hi, what is the shorthand for border when borders have different width? I tried this: border:1px solid black, 2px solid black, 3px solid black, 4px solid bla

Other Ruby Map Shorthand Notation

I am aware of the shorthand for map that looks like: [1, 2, 3, 4].map(&:to_s) > ["1", "2", "3", "4"] I was told this is shorthand for: [1, 2, 3, 4].m