{% if parameters.gallery and page.extra.galleries and page.extra.galleries[parameters.gallery] %}
<div class="gallery">
  {% set gallery_name = parameters.gallery %}
  {% set gallery = page.extra.galleries[gallery_name] %}

  {% for image in gallery %}
    <div class="gallery-item">
      <img src="{{ get_url(path=image.file) }}" alt="{{ image.alt | default(value="") }}">
      <div class="caption">{{ image.title }}</div>
    </div>
  {% endfor %}
</div>
{% endif %}