diff --git a/preview/index.html b/preview/index.html
index 90017a1..ddd4c65 100644
--- a/preview/index.html
+++ b/preview/index.html
@@ -358,4 +358,6 @@ showMessage('Gmail / Outlook simulation is approximate. For accurate rendering w
     showMessage('Dev server connection failed', 'error');
   };
 })();
-
+</script>
+</body>
+</html>