The current page editor only handles very simple layout options which are not optimized for mobile devices. We will need a more advanced container options if we want admins to configure a mobile site with more than just a simple row layout.
Ideally, the container would just be a div which gets placed on the page, and by being able to configure the class/id of the div the admin would have more control over how its layed out on the page. This mayb mean having to have page based css (maybe an 'advanced' tab on the page editor to edit the css directly).
Note: we can't use inline css since media queries don't work for inline css