Create mobile responsive 'Contact Us' HTML page

Hello, I'd like you to create a replica of the top 7 boxes on this page, to act as a stand-alone page on our website

http://www.topshop.com/en/tsuk/category/topshop-at-oxford-circus-6530258/home

The page must be mobile responsive, with the boxes snapping to fit on a mobile device.

Wireframe attached. I can edit the content of the template and write all the copy, you just need to build it and put dummy copy in place.

You will supply:

- HTML page
- Accompanying CSS

I need this turned around in the next 48 hours.