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[yaffs-website] / web / core / modules / system / templates / container.html.twig

diff --git a/web/core/modules/system/templates/container.html.twig b/web/core/modules/system/templates/container.html.twig
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+{#
+/**
+ * @file
+ * Default theme implementation of a container used to wrap child elements.
+ *
+ * Used for grouped form items. Can also be used as a theme wrapper for any
+ * renderable element, to surround it with a <div> and HTML attributes.
+ * See \Drupal\Core\Render\Element\RenderElement for more
+ * information on the #theme_wrappers render array property, and
+ * \Drupal\Core\Render\Element\container for usage of the container render
+ * element.
+ *
+ * Available variables:
+ * - attributes: HTML attributes for the containing element.
+ * - children: The rendered child elements of the container.
+ * - has_parent: A flag to indicate that the container has one or more parent
+     containers.
+ *
+ * @see template_preprocess_container()
+ *
+ * @ingroup themeable
+ */
+#}
+{%
+  set classes = [
+    has_parent ? 'js-form-wrapper',
+    has_parent ? 'form-wrapper',
+  ]
+%}
+<div{{ attributes.addClass(classes) }}>{{ children }}</div>