Create An HTML/CSS Mobile Web App Using Sencha Touch
►http://coding.smashingmagazine.com/2011/07/19/create-an-html-and-css-mobile-web-app-using-sencha-touch
Those of you who have designed iOS native apps are used to fixed-width and -height images that are positioned and aligned in the Interface Builder (or using code). Designing mobile Web apps is different: you’re designing for the browser again, just as you would for a typical website.
What does this mean? It means you can take advantage of a lot of cool CSS design tricks. In many cases, you can design an entire interface using CSS instead of images.