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RoundedButton.dart

RaisedButton(
  child: Text(
    'Add Transaction',
    style: TextStyle(
      // color: Colors.white,
      fontWeight: FontWeight.bold,
      fontSize: 18,
    ),
  ),
  color: Colors.purple,
  onPressed: () {},
  textColor: Colors.white,
  shape: RoundedRectangleBorder(
    borderRadius: BorderRadius.circular(30),
    side: BorderSide(
      color: Colors.purpleAccent,
    ),
  ),
  padding: EdgeInsets.symmetric(vertical: 15, horizontal: 25),
),