くまもんさんのから改変

uhooooi.dart

// 以下のgistを改変して雑に改変
// https://gist.github.com/kumamotone/6387fcf4437f1fc68d864e45d47e51ff

import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:flutter/rendering.dart';

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

class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);

  static const topColor = Color.fromARGB(255, 241, 131, 164);
  static const bottomColor = Color.fromARGB(255, 243, 243, 128);
  static const titleColor = Color.fromARGB(255, 97, 3, 95);

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'クレヨンしんちゃん',
      home: Scaffold(
        body: Center(
          child: Container(
            padding: const EdgeInsets.all(16.0),
            width: 400,
            height: 300,
            decoration: const BoxDecoration(
              gradient: LinearGradient(
                  begin: Alignment.topCenter,
                  end: Alignment.bottomCenter,
                  colors: <Color>[topColor, bottomColor]),
            ),
            child: Column(
              mainAxisAlignment: MainAxisAlignment.center,
              crossAxisAlignment: CrossAxisAlignment.start,
              children: [
                Column(
                  crossAxisAlignment: CrossAxisAlignment.start,
                  children: [
                    Text(
                      "かいはつとちゅう",
                      style: Theme.of(context)
                          .textTheme
                          .overline
                          ?.merge(const TextStyle(color: titleColor)),
                    ),
                    Text(
                      "開発途中で",
                      style: Theme.of(context)
                          .textTheme
                          .headline6
                          ?.merge(const TextStyle(
                            color: titleColor,
                            fontWeight: FontWeight.bold,
                          )),
                    ),
                  ],
                ),
                Padding(
                  padding: const EdgeInsets.only(left: 32),
                  child: Text(
                    "だいたいプレビュー使わなくなるゾ",
                    textAlign: TextAlign.end,
                    style: Theme.of(context)
                        .textTheme
                        .headline6
                        ?.merge(const TextStyle(
                          color: titleColor,
                          fontWeight: FontWeight.bold,
                        )),
                  ),
                ),
              ],
            ),
          ),
        ),
      ),
    );
  }
}

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