Add Shadow and Opacity for the Container

signin.dart

Stack(
                        children: [
                          Container(
                            height: height * 0.57,
                            child: Align(
                              alignment: Alignment.bottomCenter,
                              child: Image.asset(
                                  "assets/png/signin_girl_image2.png",
                                  height: height * 0.49),
                            ),
                          ),
                          ClipRRect(
                            child: BackdropFilter(
                              filter: ImageFilter.blur(
                                sigmaX: 5,
                                sigmaY: 5,
                              ),
                              child: Container(
                                height: height * 0.57,
                                decoration: BoxDecoration(
                                  borderRadius: BorderRadius.circular(25),
                                  color:
                                      shadow_container_color.withOpacity(0.07),
                                ),
                                child: Column(
                                  
                                ),
                              ),
                            ),
                          ),
                        ],
                      ),