banner.twig

<div{{ attributes.addClass('banner') }}>
  <div class="container">
    <div class="banner__inner">
      <div class="banner__image">
        {% block image %}{% endblock %}
      </div>
      <div class="banner__content">
        {% block content %}{% endblock %}
      </div>
    </div>
  </div>
</div>

File

core/profiles/demo_umami/themes/umami/components/banner/banner.twig

<div{{ attributes.addClass('banner') }}>
  <div class="container">
    <div class="banner__inner">
      <div class="banner__image">
        {% block image %}{% endblock %}
      </div>
      <div class="banner__content">
        {% block content %}{% endblock %}
      </div>
    </div>
  </div>
</div>