JUX Metro Contents stacked left

Hi

I have a Joomla Module JUX Metro Contents. It has been installed into the following website (front page): www.thetallgiraffe.co.uk/

You should see that the extension is stacked to the left. I've noticed it change in width size with every time "Firebug" is selected.

Is there any advice on how to size the module extension on the page please?

Thanks in advance.

I had the module contained within a <section class ="tiles">

working now with that changed to a basic <div>