Background Flutter widget with linear gradient

custom_background.dart

class BackgroundWidget extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return LayoutBuilder(
      builder: (BuildContext context, BoxConstraints constraints) {
        return Align(
          alignment: AlignmentDirectional.topCenter,
          child: Container(
            width: constraints.maxWidth,
            height: constraints.maxHeight,
            decoration: BoxDecoration(
              gradient: LinearGradient(
                colors: [
                  Color(0xFF045E9A),
                  AppConfigs.of(context).colors.vividCyan,
                ],
                begin: const FractionalOffset(0.0, 0.0),
                end: const FractionalOffset(1.0, 1.0),
              ),
            ),
            child: SvgPicture.asset(
              "${Constants.ASSETS_IMAGES}pic_background.svg",
              fit: BoxFit.cover,
            ),
          ),
        );
      },
    );
  }
}