home: Column( mainAxisAlignment: MainAxisAlignment.spaceEvenly, crossAxisAlignment: CrossAxisAlignment.center, children: [ Row( mainAxisAlignment: MainAxisAlignment.spaceEvenly, children: [ Container( color: Colors.red, height: 100, width: 100, ), Container( color: Colors.orange, height: 100, width: 100, ), Container( color: Colors.yellow, height: 100, width: 100, ), ], ), Row( mainAxisAlignment: MainAxisAlignment.spaceEvenly, children: [ Container( color: Colors.green, height: 100, width: 100, ), Container( color: Colors.cyan, height: 100, width: 100, ), Container( color: Colors.blue, height: 100, width: 100, ), ], ), Row( mainAxisAlignment: MainAxisAlignment.spaceEvenly, children: [ Container( color: Colors.purple, height: 100, width: 100, ), Container( color: Colors.pink, height: 100, width: 100, ), Container( color: Colors.white, height: 100, width: 100, ), ], ) ], ) ); } }