$utilities: map-merge(
  $utilities,
  (
    "font-smoothing": (
      property: -webkit-font-smoothing -moz-osx-font-smoothing,
      class: null,
      variants: font-smoothing,
      values: (
        "antialiased": (
          -webkit-font-smoothing: antialiased,
          -moz-osx-font-smoothing: grayscale,
        ),
        "subpixel-antialiased": (
          -webkit-font-smoothing: auto,
          -moz-osx-font-smoothing: auto,
        ),
      ),
    ),
  )
);