diff --git a/index.html b/index.html
index 0dc3343..dc4714f 100644
--- a/index.html
+++ b/index.html
@@ -18,7 +18,7 @@
 
 <body class="mdui-theme-primary-indigo mdui-theme-accent-blue mdui-loaded" id="p-d">
     <!-- loading start -->
-    <div id="">
+    <div id="loading">
         <span></span>
     </div>
     <!-- loading end -->
