webawesome/docs/assets/styles/outline.css

#outline {
  order: 2;
  padding-inline-end: 2rem;
  margin-block: 2rem;
}

#outline h2 > a {
  font-weight: inherit;
  color: inherit;
}

#outline > nav {
  position: sticky;
  top: calc(var(--docs-header-height) + 3.5rem);
}

#outline-expandable {
  display: none;
}

#outline-expandable ul {
  columns: 2;
  column-gap: 2rem;
  padding-inline: 1rem;
}

#outline [data-level='3'] {
  margin-inline-start: 1rem;
}

@media screen and (max-width: 1299px) {
  #outline {
    padding-block: 0.25rem;
    margin-block-end: -1rem;
  }

  #outline-standard {
    display: none;
  }

  #outline-expandable {
    display: block;
  }
}