A new Flutter project.
This project is a starting point for a Flutter application.
A few resources to get you started if this is your first Flutter project:
For help getting started with Flutter, view our online documentation, which offers tutorials, samples, guidance on mobile development, and a full API reference.
https://api.flutter.dev/flutter/widgets/Stack-class.html
https://api.flutter.dev/flutter/widgets/Hero-class.html
I want to be as big as my parent allows (double.infinity)
I want to be as big as the screen (MediaQuery)