appBar in Flutter has three main things to consider: backgroundColorset backgroundColor transparent using Colors.transparentelevationset elevation to 0 (the elevation value is between 1 and 0 (where 0 means transparent)examplebackgroundColor: Colors.transparent,elevation: 0,optional:shadowColor it can be setted transparent using Colors.transparent tooshadowColor: Colors.transparent,=) ...

My first test post ...