const String appName = 'ZXScanner'; /// space between widgets const spaceSmall = 2.0; const spaceSmall2 = 4.0; const spaceMedium = 8.0; const spaceDefault = 16.0; const spaceLarge = 24.0; const spaceLarge2 = 32.0; const spaceLarge3 = 40.0; const spaceLarge4 = 96.0; const spaceMaxWidth = 736.0;