fix navbar container for default 940px grid per #2194

less/mixins.less

@@ -502,7 +502,7 @@
       margin-left: @gridGutterWidth;
     }
 
-    // Set the container width, and reset it for fixed navbars
+    // Set the container width, and override it for fixed navbars in media queries
     .container,
     .navbar-fixed-top .container,
     .navbar-fixed-bottom .container { .span(12); }

less/navbar.less

@@ -179,6 +179,11 @@
   .border-radius(0);
 }
 
+.navbar-fixed-top .container,
+.navbar-fixed-bottom .container {
+  #grid > .core > .span(@gridColumns);
+}
+
 // Fixed to top
 .navbar-fixed-top {
   top: 0;