AnimatedContainer(
width: MediaQuery.of(context).size.width, //change to see the change - super cool
alignment: Alignment.bottomCenter, //align to i.e topCenter to see the awesome transition
height: MediaQuery.of(context).size.height,
duration: Duration(milliseconds: 100),
padding: EdgeInsets.fromLTRB(15, 10, 15, 5),
decoration: BoxDecoration(
gradient: LinearGradient(
begin: Alignment.topRight,
end: Alignment.bottomLeft,
colors: [Colors.grey, Colors.white],
)),