@screens:
  sm 576px 540px,
  md 768px 720px,
  lg 992px 960px,
  xl 1200px 1140px;

@spacing-scale:
  'px' 1px,
  '0' 0,
  '1' 0.25rem,
  '2' 0.5rem,
  '3' 0.75rem,
  '4' 1rem,
  '6' 1.5rem,
  '8' 2rem,
  '12' 3rem,
  '16' 4rem,
;