If all you need is a separate page with a centralized layout that is responsive, I would highly recommend Getskeleton. I had some experience using this structure for my projects, and it is really lightweight and easy to implement, it seems like a good fit for your project.
If you are not too worried about the site reacting, I would say use 960.gs. It is widely used, that is, you can get a lot of support if you have problems.
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