nav {
  display: block;
  columns: 22ch;
  column-gap: 2.5lh;
}
nav {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(16ch, 1fr));
  column-gap: 2.5lh;
  justify-content: center;
}
nav {
  display: grid-lanes;
  grid-template-columns: repeat(auto-fill, minmax(18ch, 1fr));
  column-gap: 2.5lh;
  justify-content: center;
}

Outdoor store mega menu