<nav class=“is-flex is-align-items-center is-justify-content-center is-flex-wrap-wrap mb-6”>

  {% for nav in site.nav %}
  {% if nav.url contains 'http://' or nav.url contains 'https://' %}
  <a class="button is-rounded m-1" href="{{ nav.url }}">{{ nav.name }}</a>
  {% else %}
  <a class="button is-rounded m-1" href="{{ nav.url | prepend: site.baseurl }}">{{ nav.name }}</a>
  {% endif %}
  {% endfor %}
</nav>