-- Header title -->
      <div class="md-flex__cell md-flex__cell--stretch">
        <div class="md-flex__ellipsis md-header-nav__title"
            data-md-component="title">
          {% block site_name %}
            {% if config.site_name == page.title %}
              {{ config.site_name }}
            {% else %}
              <span class="md-header-nav__topic">
                {{ config.site_name }}
              </span>
              <span class="md-header-nav__topic">
                {{ page.title }