Flutter widget to show text in popup or overlay container

dependencies:
  ...
  show_more_text_popup: ^latest-version

import 'package:show_more_text_popup/show_more_text_popup.dart';

ShowMoreTextPopup popup = ShowMoreTextPopup(context,
    text: text,
    textStyle: TextStyle(color: Colors.black),
    height: 200,
    width: 100,
    backgroundColor: Color(0xFF16CCCC));
popup.show(
  widgetKey: key,
);