Issue #3472319 by prashant.c, f0ns, bebalachandra, markconroy: Header is...

#}

  <main>

    <div class="visually-hidden"><a id="main-content" tabindex="-1"></a></div>

    {% if page.breadcrumb or page.header %}

      <header class="content-header clearfix">

        <div class="layout-container">

          {{ page.breadcrumb }}

          {{ page.header }}

        </div>

      </header>

    {% endif %}

    <div class="layout-container">

      {{ page.pre_content }}