diff --git a/olivesnews.theme b/olivesnews.theme
index 094a683..e772581 100755
--- a/olivesnews.theme
+++ b/olivesnews.theme
@@ -44,6 +44,20 @@ function olivesnews_preprocess_html(&$variables) {
       'href' => $variables['olivesnews_path'] . '/css/components/navigation/nav-primary-no-js.css?' . $query_string,
     ],
   ];
+// Use routeMatch — this is the modern, preferred way.
+  $node = \Drupal::routeMatch()->getParameter('node');
+
+  if ($node instanceof \Drupal\node\NodeInterface) {
+    // Add a simple node-ID class (most common format today).
+    $variables['attributes']['class'][] = 'node-' . $node->id();
+
+    // Optional: Add the classic Drupal 7-style class if you prefer / need it for legacy CSS.
+    // $variables['attributes']['class'][] = 'page-node-' . $node->id();
+
+    // Optional extras people often add at the same time:
+    // $variables['attributes']['class'][] = 'node-type-' . $node->bundle();
+    // $variables['attributes']['class'][] = 'node-' . $node->bundle();
+  }
 }
 
 
@@ -728,3 +742,4 @@ function olivesnews_preprocess_mirador(&$variables) {
   ]);
 }
  */
+
diff --git a/templates/block/block--views-block--download-media-issue-block-1.html.twig b/templates/block/block--views-block--download-media-issue-block-1.html.twig
index 73926f2..1f35962 100755
--- a/templates/block/block--views-block--download-media-issue-block-1.html.twig
+++ b/templates/block/block--views-block--download-media-issue-block-1.html.twig
@@ -49,7 +49,7 @@ layout ? 'layout--' ~ layout|clean_class,
     {{ title_suffix }}
     {% block content %}
     <details>
-      <summary>Show All Pages</summary>
+      <summary class="main">Show All Pages</summary>
       <div{{ content_attributes.addClass('block__content') }}>
         {{ content }}
         </div>
diff --git a/templates/content/node--islandora-object.html.twig b/templates/content/node--islandora-object.html.twig
index dfea06b..de21130 100755
--- a/templates/content/node--islandora-object.html.twig
+++ b/templates/content/node--islandora-object.html.twig
@@ -12,7 +12,7 @@ view_mode ? 'node--view-mode-' ~ view_mode|clean_class,
 ]
 %}
 <details>
-  <summary>About</summary>
+  <summary class="button">About</summary>
   <article{{ attributes.addClass(classes) }}>
     <header class="{{ layout }}">
       {{ title_prefix }}