title: ScrollTop in FullScreen jQuery
body: <p>When the browser is normal mode, the user can click a button and scroll to a div at the top of the page :</p>
  
  <p><code>$('html,body').animate({scrollTop:$('.backTop').offset().top}, 150);</code></p>
  
  <p><a href="https://jsfiddle.net/f6xr93b7/" rel="nofollow noreferrer">https://jsfiddle.net/f6xr93b7/</a></p>
  
  <p>But having the browser in fullscreen mode, does not work</p>