{% if paragraph.field_gallery_item_link.0.value %}
  {% set url = paragraph.field_gallery_item_link.0.value %}
  {% set class_modal = '' %}
  {% set class_box = 'box-link' %}
  {% set target = "target='_blank'" %}
{% elseif paragraph.field_gallery_item_video_url.0.value %}
  {% set url = paragraph.field_gallery_item_video_url.0.value %}
  {% set class_modal = 'swipebox-video' %}
  {% set class_box = 'box-video' %}
  {% set target = '' %}
{% else %}
  {% set url = content.field_gallery_item_image.0 %}
  {% set class_modal = 'swipebox-video' %}
  {% set class_box = 'box-img' %}
  {% set target = '' %}
{% endif %}
<li>
  <div class="box {{ class_box }}">
    <a {{ target }} class="{{ class_modal }}" href="{{ url }}" style="background-image : url({{ content.field_gallery_item_image.0 }});">
      {% if paragraph.field_gallery_item_text.0.value %}
      <div class='caption'>{{ paragraph.field_gallery_item_text.0.value }}</div>
      {% endif %}
    </a>
  </div>
</li>