diff --git a/src/pages/06_edm/MainPage.vue b/src/pages/06_edm/MainPage.vue
index 1edeb400..162b9374 100644
--- a/src/pages/06_edm/MainPage.vue
+++ b/src/pages/06_edm/MainPage.vue
@@ -19,7 +19,8 @@ watch(
   <iframe
     :src="`http://localhost:9001/?at=${at}&rt=${rt}`"
     frameborder="0"
-    class="full-width full-height rounded bordered"
+    class="full-width full-height rounded"
+    allowtransparency="true"
   ></iframe>
 </template>