GreatBear

Style15 and Style16 doesn't work.

2

Throw errors like this: ``` ════════ Exception caught by rendering library ═════════════════════════════════ RenderBox was not laid out: RenderCustomPaint#20b8b relayoutBoundary=up8 'package:flutter/src/rendering/box.dart': Failed assertion: line 1940 pos 12: 'hasSize' The relevant error-causing...