diff -u b/core/modules/system/system.admin.inc b/core/modules/system/system.admin.inc
--- b/core/modules/system/system.admin.inc
+++ b/core/modules/system/system.admin.inc
@@ -187,6 +187,7 @@
  *     - links: (optional) Administration links provided by the module.
  *     - #requires: (optional) A list of modules that the project requires.
  *     - #required_by: (optional) A list of modules that require the project.
+ *     - #attributes: A list of attributes for the module wrapper.
  */
 function template_preprocess_system_modules_details(&$variables) {
   $form = $variables['form'];
diff -u b/core/modules/system/templates/system-modules-details.html.twig b/core/modules/system/templates/system-modules-details.html.twig
--- b/core/modules/system/templates/system-modules-details.html.twig
+++ b/core/modules/system/templates/system-modules-details.html.twig
@@ -54,9 +54,7 @@
         </td>
         <td class="description expand priority-low">
           <details class="js-form-wrapper form-wrapper" id="{{ module.enable_id }}-description">
-            <summary aria-controls="{{ module.id }}" role="button">
-              <span class="text module-description">{{ module.description }}</span>
-            </summary>
+            <summary aria-controls="{{ module.id }}" role="button"><span class="text module-description">{{ module.description }}</span></summary>
             <div class="details-wrapper">
               <div class="details-description">
                 <div class="admin-requirements">{{ 'Machine name:'|t }} <span class="table-filter-text-source" dir="ltr">{{ module.machine_name }}</span></div>