On iOS when the push style transition is used,
Flutter’s bundled CupertinoNavigationBar
and CupertinoSliverNavigationBar nav bars
automatically animate each subcomponent to its corresponding
subcomponent on the next or previous page’s
CupertinoNavigationBar or CupertinoSliverNavigationBar.

Back navigation

On Android,
the OS back button, by default, is sent to Flutter
and pops the top route of the WidgetsApp’s Navigator.

On iOS,
an edge swipe gesture can be used to pop the top route.

Scrolling

Scrolling is an important part of the platform’s
look and feel, and Flutter automatically adjusts
the scrolling behavior to match the current platform.

Physics simulation