doc.dart

Positioned(
                height: baseItemHeight,
                left: 0,
                right: 0,
                child: DecoratedBox(
                  decoration: BoxDecoration(
                    borderRadius: BorderRadius.circular(8),
                    gradient: const LinearGradient(colors: [
                      Colors.blueAccent,
                      Colors.greenAccent,
                    ]),
                  ),
                ),
              )