:root {
  --grid: repeat(1,minmax(0,1fr));
}

.addon-links__wrapper {
  display: grid;
  gap: var(--sizing-sm);
  grid-template-columns: var(--grid);
}

.addon-links__wrapper h2 {
  margin-top: 0;
}

.addon-links__wrapper div:last-of-type h2 {
  margin-top: var(--sizing-base);
}

@media screen and (min-width: 768px) {
  :root {
    --grid: repeat(2,minmax(0,1fr));
  }

  .addon-links__wrapper div h2 {
    margin-top: 0 !important;
  }
}