Want to make my raw material buttons large and more tightly packed together? Changing the padding property, unfortunately, did not work for me. However, changing the constraints parameter like in this example turned out to be quite effective:
constraints: BoxConstraints.tight(Size(36, 36)),
child: Icon(Icons.trending_up, size: 18),
shape: new CircleBorder(),
fillColor: Color.fromARGB(255, 240, 240, 240),
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