_includes/footer.html

<footer class="bg-gray-light border-top py-4 text-gray text-center mt-6 flex-none">
  <span aria-label="Made with love by GitHub and friends">
    <a href="https://github.com/{{ site.gh_repo }}" class="text-gray-dark mb-2">
      Made with :heart: by :octocat:s and friends
    </a>
  </span>
  <div class="d-flex flex-justify-center text-uppercase text-bold my-1">
    <a href="{{ site.baseurl }}/feed.xml" aria-label="Feed xml" class="d-flex flex-items-center text-gray text-uppercase mr-4">
      <div class="d-flex mr-1">{% octicon rss %}</div> 
      {{ site.data.ui-text[site.locale].feed_label }}
    </a>
    <a href="https://github.community" class="d-flex flex-items-center text-gray text-uppercase"><div class="d-flex mr-1">{% octicon organization %}</div> Community</a>
  </div>
  
  <p>&copy; {{ site.time | date: '%Y' }} {{ site.name }} {{ site.data.ui-text[site.locale].powered_by }}  <a href="https://jekyllrb.com" rel="nofollow" class="text-gray-dark">Jekyll</a> &amp; 
    <a href="https://github.com/primer/primer-css" rel="nofollow" class="text-gray-dark">Primer</a>.
  </p>
</footer>