message: update the color of the nav items.
diff: </script>
  <style lang="scss">
  + a {
  + color: var(--dark-grey);
  +
  + @media (max-width: 768px) {
  + color: var(--black);
  + }
  + }
  +
  + a:hover,
  + a:focus {
  + color: var(--black);
  + }
  </style>
  <a {href} on:click sveltekit:prefetch><slot /></a>
  