er">
        {%- include "partials/mobile-header.html" -%}
      </div>
      {#- 2nd row: main area, showing article and page-toc.
      page-toc is visible if the window width is wide enough. -#}
      <div id="main-wrapper">
        <div id="main-column">
          <div id="main-body">
            {% block content %}{{ body }}{% endblock %}
            {%- include "partials/related-pages.html" -%}
          </div>
        </div>
        <div id="toc-column" class="with-scroll">
          {% 