diff --git a/ui/src/views/theme/LoginPreview.vue b/ui/src/views/theme/LoginPreview.vue
index 26393b34a..ed2aa0045 100644
--- a/ui/src/views/theme/LoginPreview.vue
+++ b/ui/src/views/theme/LoginPreview.vue
@@ -79,6 +79,7 @@ const fileURL = computed(() => {
       top: 0;
       height: 100%;
       width: 100%;
+      z-index: 3;
     }
   }