136. How to achieve responsiveness in your web app?

As there are more and more screen sizes, it is essential for web apps to not just work but also serve good User Experience on different devices.

To answer this question, you might talk about:

1. pros & consof Responsive design
2. what kind of responsive design patterns there are
3. how to implement responsiveness
4. common problems
5. collabaration with designers
6. ...