Replace the CSS with whatever you want. You would likely want to remove the App Framework libraries and use whatever you want. Or, find another HTML5 list example and create a new app based on that.
Hi Paul, thank you for your answer. For example I have used the login template and I see just one css afui.ui.css. If I want to change this to framewrok7 look and feel, which of the css sheets should I replace? I mean framework 7 has more then 1 stylesheet.
Youssef -- we don't have the resources to help you learn how to apply CSS and other standard HTML5 resources. Your best bet is to search resources like W3C Schools, HTML5 Rocks, etc. We're here to help you get through the logistics of building and debugging your app.