message: remove the un necessary unit.
diff: --macro: 0.5rem;
  --shadow: 0 0.625rem 1.5rem 0rem rgba(0, 0, 0, 0.08);
  - --shadow-light: 0px 1px 1px rgba(0, 0, 0, 0.1);
  + --shadow-light: 0 1px 1px rgba(0, 0, 0, 0.1);
  --shadow-brand: 0 0.6875rem 2.4375rem var(--brand-almost-ripe);
  --border-light: 1px solid var(--sand-dark);
  