Update index.html

js/index.html

@@ -16,7 +16,7 @@
       />
       <input type="submit" value="Log In" />
     </form>
-    <h1 id="greeting" class="hidden"></h1>
+    <h1 class="hidden" id="greeting"></h1>
     <script src="app.js"></script>
   </body>
 </html>