I want to make RichText align to the left.
I tried use Container, Row, Column, Flexible, Expanded widgets, but nothing helped me.

Future getAuthorsDialog(BuildContext context) {
  return showDialog<String>(
    context: context,
    builder: (BuildContext context) => Dialog(
      insetPadding: const EdgeInsets.symmetric(vertical: 90.0),
      child: Column(
          children: <Widget>[
            const SizedBox(height: 8.0),
            RichText(
              textAlign: TextAlign.left,
              text: const TextSpan(
                text: 'Mod: ',
                style: TextStyle(
                    fontSize: 12.0,
                    fontWeight: FontWeight.bold
                ),
                children: [
                  TextSpan(
                      text: 'Tester',
                      style: TextStyle(
                          fontSize: 12.0,
                          fontWeight: FontWeight.w600
                      )
                  ),
                ]
              )
            ),
       ]),
    ),
  );
}