Follow section and display in menu without bootstrap js

http://jsfiddle.net/ux8nvLzk/

Here is the result can someone test me works on mobile?

Thanks.

@bestdesign,
if you want to test your design on mobile devices you can use Chrome Developer Tools.

To test your website on different screen resolutions, right click anywhere on the page and choose inspect.

Near the top left corner, there will be an icon resembling two smartphones. Once you click on it, you will be presented with a selector to choose the screen resolution.