main.dart

AnimatedBuilder(
  animation: cardSwipeAnimationController,
  builder: (context, snapshot) {
    Offset translateOffset = Offset.fromDirection(direction, cardAnimationController.value);

    return Transform.translate(
        offset: Offset(translateOffset.dx, 0),
        child: Card(
            child: Center(
                child: Text("${widget.displayNumber}",
                    style: TextStyle(fontSize: 40)))));
  },
),