diff --git a/snippets/product-media-gallery.liquid b/snippets/product-media-gallery.liquid
index ddb1c4f..5f84551 100644
--- a/snippets/product-media-gallery.liquid
+++ b/snippets/product-media-gallery.liquid
@@ -77,7 +77,7 @@
         {%- unless media.id == product.selected_or_first_available_variant.featured_media.id -%}
           <li
             id="Slide-{{ section.id }}-{{ media.id }}{{ id_append }}"
-            class="product__media-item grid__item slider__slide{% if single_media_visible %} product__media-item--single{% endif %}{% if media_position == 0 and forloop.index == 1 %} is-active{% endif %}{% if media.media_type != 'image' %} product__media-item--full{% endif %}{% if section.settings.hide_variants and variant_images contains media.src %} product__media-item--variant{% endif %}{% if settings.animations_reveal_on_scroll %} scroll-trigger animate--fade-in{% endif %}"
+            class="product__media-item grid__item slider__slide{% if single_media_visible %} product__media-item--single{% endif %}{% if media_position == first_video %} is-active{% endif %}{% if media.media_type != 'image' %} product__media-item--full{% endif %}{% if section.settings.hide_variants and variant_images contains media.src %} product__media-item--variant{% endif %}{% if settings.animations_reveal_on_scroll %} scroll-trigger animate--fade-in{% endif %}"
             data-media-id="{{ section.id }}-{{ media.id }}"
             {% if product.selected_or_first_available_variant.featured_image.alt != media.alt and product.selected_or_first_available_variant.featured_image.alt != blank %}
             style="display: none;"