Positioning

  // class name : property value
  $s-displays: (
    'd-none': none,
    'd-block': block,
    'd-flex': flex,
    'd-inline-block': inline-block,
    'd-inline-flex': inline-flex,
  ),
  

  // class name : property value
  $s-positions: (
    'p-relative': relative,
    'p-absolute': absolute,
  ),