nni/docs/templates/hero.html

{% if pagename in theme_heroes %}
{% set hero = theme_heroes[pagename] %}
<div class="md-hero{% if nav_bar_tabs %} md-hero--expand{% endif %}" data-md-component="hero">
  <div class="md-hero__inner md-grid">
    <p>{{ hero }}</p>
  </div>
  <div class="md-hero__background">
    <img src="{{ pathto('_static/img/hero-background.svg', 1) }}" />
  </div>
</div>
{% endif %}