footer.html

<footer class="mt-auto">
  <div class="container-fluid">
    {% if site.github.is_project_page %}
        <p>{{ site.title | default: site.github.repository_name }}. Source on <a href="{{ site.github.owner_url }}">{{ site.github.owner_name }}'s GitHub</a></p>
        {% endif %}
        <p>Published with <a href="https://pages.github.com">GitHub Pages</a></p>
        <p class="copyright">
            <a rel="license" href="http://creativecommons.org/licenses/by/4.0/">
                <img alt="Creative Commons License" style="border-width:0" src="https://i.creativecommons.org/l/by/4.0/88x31.png" />
            </a>
                Copyright 2020 Jason Lowe-Power
                <br />
                This work is licensed under a <a rel="license" href="http://creativecommons.org/licenses/by/4.0/">
                    Creative Commons Attribution 4.0 International License
                </a>.
        </p>
  <p>Built using <a href="https://course-in-a-box.p2pu.org">Course in a Box</a>, a project of <a href="https://www.p2pu.org">P2PU</a>.</p>
  </div>
</footer>