<header class="Header">
  <div class="Header-inner">
    <div class="Header-logo">
      <a href="{{ site.github.url }}/">{{ site.data.settings.title }}</a>
    </div>
    <nav class="Header-nav">
      {% for item in site.data.settings.menu %}
        {% if item.external %}
        <a href="{{ item.url }}" target="_blank" rel="noopener nofollow">
            {{ item.name }}
        </a>
        {% else %}
          <a href="{{ site.github.url }}{{ item.url }}">{{ item.name }}</a>
        {% endif %}
      