popov.link/_includes/navbar.html

{% assign pages = site.pages | where: "show", true %}
<nav class="navigation">
  <a href="{{ site.url | uri_escape }}">Home</a>
  {% for page in pages %}
    <a href="{{ page.url | relative_url | uri_escape }}">
      {{ page.title | strip_newlines | strip_html | strip | normalize_whitespace | smartify }}
    </a>
  {% endfor %}
</nav>