padding_widget.dart

class PaddingWidget extends StatelessWidget {
  const PaddingWidget({
    Key key,
  }) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return Padding(
      padding: EdgeInsets.symmetric(horizontal: 20),
      child: Row(
        crossAxisAlignment: CrossAxisAlignment.center,
        mainAxisAlignment: MainAxisAlignment.spaceBetween,
        children: <Widget>[
          Row(
            crossAxisAlignment: CrossAxisAlignment.center,
            children: <Widget>[
              Text(
                "Period",
                style: TextStyle(
                  fontWeight: FontWeight.bold,
                  color: Theme.of(context).textTheme.caption.color,
                ),
              ),
              SizedBox(
                width: 30,
              ),
              Text(
                "Last 30 days",
                style: TextStyle(
                  fontWeight: FontWeight.bold,
                  fontSize: 16,
                ),
              ),
            ],
          ),
          Container(
            height: 40,
            width: 40,
            decoration: BoxDecoration(
              borderRadius: BorderRadius.circular(10),
              color: Theme.of(context).primaryColor,
              boxShadow: [
                BoxShadow(
                  offset: Offset(3, 3),
                  color: Colors.black12,
                  blurRadius: 5,
                ),
                BoxShadow(
                  offset: Offset(-3, -3),
                  color: Colors.white,
                  blurRadius: 5,
                )
              ],
            ),
            child: Icon(
              Icons.arrow_forward_ios,
              size: 14,
            ),
          ),
        ],
      ),
    );
  }
}