我是新手学习Flutter，想要创建一个类似下面图片所示的简单菜单设计...我尝试了下面的代码，但没有得到相同的设计，有没有办法实现它？
[图片在这里][1]
[1]: https://i.stack.imgur.com/oJBrG.png
MaterialApp(
  home: Scaffold(
    appBar: AppBar(
      title: Text("卡片叠加堆叠"),
    ),
    body: Stack(
      children: <Widget>[
        Align(
          alignment: Alignment.topCenter,
          child: Container(
            decoration: BoxDecoration(
                borderRadius: BorderRadius.all(Radius.circular(10.0)),
                color: Colors.lightBlueAccent),
            height: 100,
          ),
        ),
        Positioned(
          top: 60,
          right: 10,
          left: 10,
          child: Card(
            child: ListTile(
                leading: SizedBox(
                    height: 150.0,
                    width: 150.0, // 固定宽度和高度
                    child: Image.asset("assets/images/test.png"))),
          ),
        ),
      ],
    ),
  ),
);

Material(
  elevation: 1, // 这将为阴影提供帮助
  child: Card(
    child: ListTile(
      leading: SizedBox(
        height: 150.0,
        width: 150.0, // 固定宽度和高度
        child: Image.asset("assets/images/test.png"),
      ),
    ),
  ),
);

尝试这个：
        Scaffold(
          appBar: AppBar(
            title: Text("叠加卡片"),
          ),
          body: Padding(
            padding: const EdgeInsets.all(20),
            child: Stack(
              children: <Widget>[
                Positioned(
                  top: 20,
                  left: 40,
                  right: 0,
                  child: Container(
                    decoration: BoxDecoration(
                        borderRadius: BorderRadius.all(Radius.circular(20)),
                        color: Colors.lightBlueAccent,
                        boxShadow: [
                          BoxShadow(
                            color: Colors.grey.shade300,
                            blurRadius: 5,
                            spreadRadius: 2,
                            offset: const Offset(4, 4),
                          )
                        ]),
                    height: 150,
                    child: Padding(
                      padding: const EdgeInsets.only(left: 75),
                      child: Column(
                        mainAxisAlignment: MainAxisAlignment.spaceAround,
                        crossAxisAlignment: CrossAxisAlignment.start,
                        children: [
                          Text('abcdefghiklmn'),
                          Text('abcdefghiklmn'),
                          Text('abcdefghiklmn'),
                          Text('abcdefghiklmn'),//在这里编写任何代码
                        ],
                      ),
                    ),
                  ),
                ),
                Positioned(
                  top: 0,
                  child: Container(
                    height: 150,
                    width: 100,
                    decoration: BoxDecoration(
                      boxShadow: [
                        BoxShadow(
                          color: Colors.grey.shade200,
                          blurRadius: 5,
                          spreadRadius: 2,
                          offset: const Offset(-3, -3),
                        )
                      ],
                      borderRadius: const BorderRadius.all(Radius.circular(20)),
                    ),
                    child: ClipRRect(
                      borderRadius: const BorderRadius all(Radius.circular(20)),
                      child: Image.asset(
                        'assets/images/test.png',
                        fit: BoxFit.cover,
                      ),
                    ),
                  ),
                ),
              ],
            ),
          ),
        );