ese-website/_includes/footer.njk

<footer>
  <div class="footer-container">
    {% set otherLang = page.url | locale_links | first %}
    <a href="{{otherLang.url}}" lang="{{otherLang.lang}}" hreflang="{{otherLang.lang}}">
      {% if otherLang.lang == "de" %}
        Deutsche Version 🇩🇪
      {% else %}
        English Version 🇬🇧/🇺🇸
      {% endif %}
    </a>
    <nav id="footerNav">
      {{ collections.footerNav | pageLang | eleventyNavigation | eleventyNavigationToHtml | safe }}
    </nav>
    <span>
      Design:
      <a href="https://designtoasty.de" target="_blank" rel="noreferrer">Designtoasty</a>
    </span>
    <span>Made with 🧉 and 🌈 in Dresden</span>
  </div>
</footer>

{% css %}
footer {
  border-top: 1px dotted rgba(0,0,0,.15);
  padding: 4rem 0;
}
#footerNav ul {
  margin: 0;
  padding: 0;
  display: flex;
  gap: 1em;
}
#footerNav li {
  display: inline;
}
.footer-container {
  max-width: var(--page-width);
  margin-left: auto;
  margin-right: auto;
  display: grid;
  grid-template-columns: auto auto;
  grid-auto-flow: column;
  grid-template-rows: 1fr 1fr;
  gap: 1em;
}
.footer-container > :nth-last-child(-n + 2) {
  text-align: end;
}
{% endcss %}