How to achieve expansion of a widget in both vertical (height) and horizontal (width) direction

Question

The code below lays out a chart in which I\'d need to achieve for the chart to be expanded in both vertical (height) and horizontal (width) direction. The suggested method (e.g.

Answer 1

Use SizedBox.expand:

SizedBox.expand(
  child: YourWidget() // Could be anything like `Column`, `Stack`...
)