Google Chrome dev tools emulation will not scroll page

Hello,
When I use Google Chrome Dev tools and set the emulation to a mobile device, reload the page and css, I cannot then 'scroll' the page vertically as I can on a 'real' phone to test the responsive elements. Can anyone help?

Thanks, try this page:

http://baleshomes.under-development.info/index.php?option=com_content&view=article&id=6&Itemid=116


Lee