Apps built with a responsive approach give a far better user experience across a wide range of devices, with just one design. Frameworks, like Twitter Bootstrap, provide components to quickly build a responsive app without extensive design skills. Join us as we step through an app built with Visualforce and Twitter Bootstrap to see how easy it can be to get started with it on your own projects. You'll also gain an understanding of the core principles behind responsive design so you can use responsive frameworks effectively within your own projects.