diff --git a/apps/demo/partials/layout/base.hbs b/apps/demo/partials/layout/base.hbs
index 12873a644b..056421f850 100644
--- a/apps/demo/partials/layout/base.hbs
+++ b/apps/demo/partials/layout/base.hbs
@@ -47,10 +47,10 @@
         targetElement.classList.add(`theme-${theme}`);
       };
 
-      // Hide elements with hide-from-visual-tests class in Supernova preview
+      // Hide elements with hide-from-visual-tests class in Supernova preview with postMessage
       window.addEventListener('message', (event) => {
           // Check if the message is from the Supernova domain
-          if (event.origin === 'https://app.supernova.io') {
+          if (event.origin === 'https://app.supernova.io' || event.origin === 'https://cdpn.io') {
               if (event.data.action === 'hide-from-visual-tests') {
                   const elements = document.querySelectorAll('.hide-from-visual-tests');
                   elements.forEach(el => {