diff --git a/core/themes/seven/seven.info.yml b/core/themes/seven/seven.info.yml
index 3f0e43c025..52ff9273e2 100644
--- a/core/themes/seven/seven.info.yml
+++ b/core/themes/seven/seven.info.yml
@@ -42,6 +42,11 @@ libraries-override:
         assets/vendor/jquery.ui/themes/base/dialog.css: false
   classy/dialog:
     seven/seven.drupal.dialog
+  classy/base:
+    css:
+      component:
+        css/components/details.css: false
+
 libraries-extend:
   core/ckeditor:
     - seven/ckeditor-dialog
diff --git a/core/themes/seven/templates/details.html.twig b/core/themes/seven/templates/details.html.twig
index 2ddea927a6..c250d2a5d4 100644
--- a/core/themes/seven/templates/details.html.twig
+++ b/core/themes/seven/templates/details.html.twig
@@ -28,7 +28,7 @@
       {{- title -}}
     </summary>
   {%- endif -%}
-  <div class="seven-details__wrapper">
+  <div class="seven-details__wrapper details-wrapper">
     {% if errors %}
       <div class="form-item form-item--error-message">
         <strong>{{ errors }}</strong>