Fix navbar toggle button

templates/base.html

@@ -46,7 +46,7 @@
         <div class="container-fluid">
             <!-- Brand and toggle get grouped for better mobile display -->
             <div class="navbar-header page-scroll">
-                <button type="button" class="navbar-toggle" data-toggle="collapse" data-target="#navbar-main">
+                <button type="button" class="navbar-toggle" data-toggle="collapse" data-target="#navbar-collapse">
                     <span class="sr-only">Toggle navigation</span>
                     <span class="glyphicon glyphicon-th-list"></span>
                 </button>