Attempting to add a modular navigation bar

var/www/messages.php

@@ -8,6 +8,7 @@
     <head>
         <title>FriendBook Messages</title>
         <meta http-equiv="content-type" content="text/html; charset=utf-8"/>
+        <link rel="stylesheet" type="text/css" href="styling.css">
     </head>
     <body>
         <style>
@@ -16,6 +17,7 @@
                 color: white;
             }
         </style>
+        <!--#include virtual="topNavBar.html" -->
         <?php
             try{
                 echo '<pre>';