diff --git a/core/modules/help/css/help.module.css b/core/modules/help/css/help.module.css
deleted file mode 100644
index 444e0cd..0000000
--- a/core/modules/help/css/help.module.css
+++ /dev/null
@@ -1,30 +0,0 @@
-
-.help-items {
-  float: left; /* LTR */
-  width: 22%;
-  margin-right: 3%; /* LTR */
-}
-[dir="rtl"] .help-items {
-  float: right;
-  margin-right: 0;
-  margin-left: 3%;
-}
-.help-items-last {
-  margin-right: 0; /* LTR */
-}
-[dir="rtl"] .help-items-last {
-  margin-right: 0;
-  margin-left: 0;
-}
-
-
-/**
- * Avoid text overlapping on a narrow viewport.
- */
-@media screen and (max-width: 480px) {
-  .help-items {
-    float: none;
-    width: 100%;
-    margin: 0;
-  }
-}
diff --git a/core/modules/help/help.libraries.yml b/core/modules/help/help.libraries.yml
deleted file mode 100644
index 541c67b..0000000
--- a/core/modules/help/help.libraries.yml
+++ /dev/null
@@ -1,5 +0,0 @@
-help:
-  version: VERSION
-  css:
-    component:
-      css/help.module.css: {}
diff --git a/core/modules/help/src/Controller/HelpController.php b/core/modules/help/src/Controller/HelpController.php
index bd2f727..216d2c7 100644
--- a/core/modules/help/src/Controller/HelpController.php
+++ b/core/modules/help/src/Controller/HelpController.php
@@ -53,10 +53,8 @@ public static function create(ContainerInterface $container) {
    */
   public function helpMain() {
     $output = array(
-      '#attached' => array(
-        'library' => ['help/help'],
-      ),
-      '#markup' => '<h2>' . $this->t('Help topics') . '</h2><p>' . $this->t('Help is available on the following items:') . '</p>' . $this->helpLinksAsList(),
+      '#markup' => '<h2>' . $this->t('Help topics') . '</h2><p>' . $this->t('Help is available on the following items:') . '</p>',
+      'links' => $this->helpLinksAsList(),
     );
     return $output;
   }
@@ -81,16 +79,27 @@ protected function helpLinksAsList() {
     // Output pretty four-column list.
     $count = count($modules);
     $break = ceil($count / 4);
-    $output = '<div class="clearfix"><div class="help-items"><ul>';
+    $column = array(
+      '#type' => 'container',
+      'links' => array('#theme' => 'item_list'),
+      '#attributes' => array('class' => array('layout-column', 'quarter')),
+    );
+    $output = array(
+      '#prefix' => '<div class="clearfix">',
+      '#suffix' => '</div>',
+      0 => $column,
+    );
+
     $i = 0;
+    $current_column = 0;
     foreach ($modules as $module => $name) {
-      $output .= '<li>' . $this->l($name, new Url('help.page', array('name' => $module))) . '</li>';
+      $output[$current_column]['links']['#items'][] = $this->l($name, new Url('help.page', array('name' => $module)));
       if (($i + 1) % $break == 0 && ($i + 1) != $count) {
-        $output .= '</ul></div><div class="help-items' . ($i + 1 == $break * 3 ? ' help-items-last' : '') . '"><ul>';
+        $current_column++;
+        $output[$current_column] = $column;
       }
       $i++;
     }
-    $output .= '</ul></div></div>';
 
     return $output;
   }