<div class="flex-header" style="flex-wrap: wrap;">
  <div class="flex-header">
    {% if include.left %}
      <div class="flex-header-left text-muted font-size-90">{{ include.left }}</div>
    {% endif %}
    <div class="flex-header-title">{{ include.title }}</div>
  </div>
  {% if include.right %}
    <div class="flex-header-right text-muted font-size-90">{{ include.right }}</div>
  {% endif %}
</div>