title: How to set a whole Page to responsive Design with gwt-bootstrap?
body: <p>I'm building a web application for Tablet. I code the css first myself. Now i added some widgets which use gwt-bootstrap. Well now i saw that gwt-bootstrap has some Methods like : <code>setHideOn(Device.PHONE)</code></p>
  
  <p>I'm  trying now to added such a method to my whole app to make it responsive. How should i process?</p>