$spacing-shortcuts: (
  "margin": "m",
  "padding": "p"
);

$spacing-directions: (
  "top": "t",
  "right": "r",
  "bottom": "b",
  "left": "l"
);

$spacing-values: (
  "0": 0,
  "1": 0.25rem,
  "2": 0.5rem,
  "3": 0.75rem,
  "4": 1rem,
  "5": 1.5rem,
  "6": 3rem,
  "auto": auto
);