expansionti.dart

import 'package:flutter/material.dart';

const Color darkBlue = Color.fromARGB(255, 18, 32, 47);

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      theme: ThemeData.dark().copyWith(
        scaffoldBackgroundColor: darkBlue,
      ),
      debugShowCheckedModeBanner: false,
      home: Scaffold(
        body: Center(
          child: MyWidget(),
        ),
      ),
    );
  }
}

class MyWidget extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return SizedBox(
      height: 500,
      child: Column(children: [
        ConstrainedBox(
          constraints: BoxConstraints(maxHeight: 300),
          child: SingleChildScrollView(
              child: ExpansionTile(
            title: const Text('testerList'),
            children: List.generate(
              30,
              (index) => Text("ssdasdas"),
            ),
          )),
        ),
        ExpansionTile(
          title: const Text('testerList'),
          children: List.generate(
            7,
            (index) => Text("ssdasdas"),
          ),
        ),
      ]),
    );
  }
}