<header class="[ intro ] [ pad-top-900 pad-bottom-max ]">
  <div>
    <h1>{{ introHeading }}</h1>
    {% if introSummary %}
      <div class="[ intro__summary ] [ sf-flow ] [ leading-mid measure-short ]">{{ introSummary | safe }}</div>
    {% endif %}
  </div>
</header>
