css for tablet/mobile

We have a working version of a simple greetings page at [login to view URL] The page has the following simple functionality. When you click on the letter in then front, the page flips over to the backside of the letter where a greeting and a short message are shown on the white paper. This is implemented using jquery mobile. We need to get the page styled for ipad and iphones. It should be sufficient to provide css files for the different platforms to solve this task. We will provide the appropriate graphics