A RenderFlex overflowed by 3.3 pixels on the bottom.

Error Message:
A RenderFlex overflowed by 3.3 pixels on the bottom.

Cause:
user_stories.dart Widget build SizedBox overflow

SizedBox(
      height: MediaQuery.of(context).size.height * 0.2,

Fix : 
       Change 0.2 to 0.21

Thank you for your amazing demo.