GradientButton.dart

class GradientButton extends StatelessWidget {
  static const Color loginGradientStart = const Color(0xFFfbab66);
  static const Color loginGradientEnd = const Color(0xFFf7418c);

  static const LinearGradient primaryGradient = const LinearGradient(
    colors: [loginGradientStart, loginGradientEnd],
    stops: [0.0, 1.0],
    begin: Alignment.topCenter,
    end: Alignment.bottomCenter,
  );

  @override
  Widget build(BuildContext context) {
    return Container(
      margin: EdgeInsets.only(top: 170.0),
      decoration: new BoxDecoration(
        borderRadius: BorderRadius.all(Radius.circular(5.0)),
        boxShadow: <BoxShadow>[
          BoxShadow(
            color: loginGradientStart,
            offset: Offset(1.0, 6.0),
            blurRadius: 20.0,
          ),
          BoxShadow(
            color: loginGradientEnd,
            offset: Offset(1.0, 6.0),
            blurRadius: 20.0,
          ),
        ],
        gradient: new LinearGradient(
            colors: [loginGradientEnd, loginGradientStart],
            begin: const FractionalOffset(0.2, 0.2),
            end: const FractionalOffset(1.0, 1.0),
            stops: [0.0, 1.0],
            tileMode: TileMode.clamp),
      ),
      child: MaterialButton(
          highlightColor: Colors.transparent,
          splashColor: loginGradientEnd,
          //shape: RoundedRectangleBorder(borderRadius: BorderRadius.all(Radius.circular(5.0))),
          child: Padding(
            padding:
                const EdgeInsets.symmetric(vertical: 10.0, horizontal: 42.0),
            child: Text(
              "LOGIN",
              style: TextStyle(
                  color: Colors.white,
                  fontSize: 25.0,
                  fontFamily: "WorkSansBold"),
            ),
          ),
          onPressed: () {}),
    );
  }
}