container border flutter

Container(
  height: 100,
  width: 100,
  decoration: BoxDecoration(
    border: Border.all(
      color: Colors.blue,
    ),
    borderRadius: BorderRadius.circular(10.0),
  ),
  child: Center(
    child: Text('mrflutter.com'),
  ),
),

Container(
  child: Text(
    'This is a Container',
    textScaleFactor: 2,
    style: TextStyle(color: Colors.black),
  ),
  decoration: BoxDecoration(
    borderRadius: BorderRadius.circular(10),
    color: Colors.white,
    boxShadow: [
      BoxShadow(color: Colors.green, spreadRadius: 3),
    ],
  ),
  height: 50,
),

new Container(
  margin: const EdgeInsets.all(15.0),
  padding: const EdgeInsets.all(3.0),
  decoration: BoxDecoration(
    border: Border.all(color: Colors.blueAccent)
  ),
  child: Text("My Awesome Border"),
)

BoxDecoration myBoxDecoration() {
  return BoxDecoration(
    border: Border.all(),
  );
}