title: Mimic iOS 13 fullscreen dialog
body: <p>I noticed that in iOS 13 full screen dialog has changed, introducing a new slide from bottom animation.
  Here is an example</p>
  
  <p><a href="https://i.stack.imgur.com/J8FxE.png" rel="noreferrer"><img src="https://i.stack.imgur.com/J8FxE.png" alt="enter image description here"></a></p>
  
  <p>Is it possible to mimic this behaviour with flutter? iOS animation it's not a simple slide from bottom but involves also the background page.</p>
  
  <p>Looking throught flutter documentation I found <a href="https://api.flutter.dev/flutter/cupertino/CupertinoFullscreenDialogTransition-class.html" rel="noreferrer">this class</a> but, without any example I can't understand how to use it or if it's what I'm searching.</p>
  
  <p>Thanks</p>