Small adjustments for tooltips

templates/header.html

@@ -20,7 +20,7 @@
             padding: 5px;
             border: 1px solid black;
             background-color: #f2f2f2;
-         }
+        }
     </style>
     <meta charset="utf-8">
     <meta http-equiv="X-UA-Compatible" content="IE=edge">