diff --git a/core/modules/system/src/Form/ModulesListForm.php b/core/modules/system/src/Form/ModulesListForm.php
index 933db95..c1474de 100644
--- a/core/modules/system/src/Form/ModulesListForm.php
+++ b/core/modules/system/src/Form/ModulesListForm.php
@@ -226,7 +226,6 @@ protected function buildRow(array $modules, Extension $module, $distribution) {
     // Generate link for module's help page. Assume that if a hook_help()
     // implementation exists then the module provides an overview page, rather
     // than checking to see if the page exists, which is costly.
-    $row['links']['help'] = array();
     if ($this->moduleHandler->moduleExists('help') && $module->status && in_array($module->getName(), $this->moduleHandler->getImplementations('help'))) {
       $row['links']['help'] = array(
         '#type' => 'link',
@@ -237,7 +236,6 @@ protected function buildRow(array $modules, Extension $module, $distribution) {
     }
 
     // Generate link for module's permission, if the user has access to it.
-    $row['links']['permissions'] = array();
     if ($module->status && $this->currentUser->hasPermission('administer permissions') && $this->permissionHandler->moduleProvidesPermissions($module->getName())) {
       $row['links']['permissions'] = array(
         '#type' => 'link',
@@ -248,7 +246,6 @@ protected function buildRow(array $modules, Extension $module, $distribution) {
     }
 
     // Generate link for module's configuration page, if it has one.
-    $row['links']['configure'] = array();
     if ($module->status && isset($module->info['configure'])) {
       $route_parameters = isset($module->info['configure_parameters']) ? $module->info['configure_parameters'] : array();
       if ($this->accessManager->checkNamedRoute($module->info['configure'], $route_parameters, $this->currentUser)) {
diff --git a/core/modules/system/system.admin.inc b/core/modules/system/system.admin.inc
index a09a6fa..e8c27c8 100644
--- a/core/modules/system/system.admin.inc
+++ b/core/modules/system/system.admin.inc
@@ -239,7 +239,9 @@ function template_preprocess_system_modules_details(&$variables) {
 
     $links = [];
     foreach (['help', 'permissions', 'configure'] as $link_type) {
-      $links[] = $module['links'][$link_type];
+      if (isset($module['links'][$link_type])) {
+        $links[] = $module['links'][$link_type];
+      }
     }
     $module['links'] = $links;
 
diff --git a/core/modules/system/templates/system-modules-details.html.twig b/core/modules/system/templates/system-modules-details.html.twig
index 5bbc1d3..114e2c3 100644
--- a/core/modules/system/templates/system-modules-details.html.twig
+++ b/core/modules/system/templates/system-modules-details.html.twig
@@ -28,17 +28,17 @@
  * @ingroup themeable
  */
 #}
-<table class="system-modules-detail">
+<table class="responsive-enabled" data-striping="1">
   <thead>
     <tr>
       <th class="checkbox visually-hidden">
-        {{ header.installed }}
+        {{- header.installed -}}
       </th>
       <th class="name visually-hidden">
-        {{ header.name }}
+        {{- header.name -}}
       </th>
       <th class="description visually-hidden priority-low">
-        {{ header.description }}
+        {{- header.description -}}
       </th>
     </tr>
   </thead>