Ok that explains the width of it then.
James Spencer wrote:
Our templates have been a standard size for years, particularly since the inception of our Gantry templates which are fixed at 960px.
However, our Responsive Gantry templates adapt to your display, so you will see a different appearance at mobile resolutions, between 768-960px, 960px-1199px and above. You may just be looking at the demo with a browser window greater than 1199px as it will go into large display mode.
You can either shrink your browser or set the template to 960px Fixed in the template manager.