<header role=“banner”>

<h1>
  <a href="{{ "/" | relative_url }}">{{ site.title | escape }}</a>
</h1>
{%- assign default_paths = site.pages | map: "path" -%}
{%- assign page_paths = site.header_pages | default: default_paths -%}
{%- if page_paths %}
<nav>
  <ul>
  {%- for path in page_paths -%}
    {%- assign my_page = site.pages | where: "path", path | first -%}
    {%- if my_page.title %}
    <li><a href="{{ my_page.url | relative_url }}">{{ my_page.title | escape }}</a></li>
    {%- endif -%}
  {% endfor %}
  </ul>
</nav>
{%- endif %}

</header>