diff --git a/material-overrides/assets/stylesheets/wormhole.css b/material-overrides/assets/stylesheets/wormhole.css
index 30d5ce73..3877da20 100644
--- a/material-overrides/assets/stylesheets/wormhole.css
+++ b/material-overrides/assets/stylesheets/wormhole.css
@@ -423,17 +423,23 @@
   }
 
   /* --- To better handle page reloads and minimize flickering */
-  :not(.js-loading) .md-nav {
+  :not(.js-loading) .md-nav,
+  :not(.js-loading) .md-tabs__list {
     opacity: 1;
   }
 
-  .js-loading nav.md-nav {
+  .js-loading nav.md-nav,
+  .js-loading .md-tabs__list {
     display: none !important;
   }
 
   .nav__item--section:not(.expanded) > nav.md-nav {
     display: none;
   }
+
+  .md-header--shadow {
+    min-height: 107px;
+  }
   /* --- */
 
   .nav__item--section
diff --git a/material-overrides/main.html b/material-overrides/main.html
index 06c662b5..44117733 100644
--- a/material-overrides/main.html
+++ b/material-overrides/main.html
@@ -118,9 +118,34 @@
         });
       }
 
+      getTopNavigationState = () => {
+        const path = window.location.pathname;
+        // If on a reference page, highlight the reference top level nav item
+        if (path.includes('products/reference')) {
+          const tabs = document.querySelectorAll('.md-tabs__item');
+
+          tabs.forEach(tab => {
+            // Remove the active class from the active tab
+            if (tab.classList.contains('md-tabs__item--active')) {
+              tab.classList.remove('md-tabs__item--active');
+            }
+
+            // Add the active class to the tab that contains 'Reference'
+            if (tab.children[0].innerText.includes('Reference')) {
+              tab.classList.add('md-tabs__item--active');
+            }
+          });
+        }
+      }
+
       document.addEventListener('DOMContentLoaded', () => {
+        // Handle left navigation state
         document.querySelectorAll('.nav__item--section').forEach(setupSection);
         applyInitialState();
+
+        // Handle top navigation state
+        getTopNavigationState();
+
         document.documentElement.classList.remove('js-loading');
       });