如何在flutter中删除卡片周围的空间

import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Card Padding',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: MyHomePage(),
    );
  }
}

class MyHomePage extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('Flutter Card Padding'),
      ),
      body: Center(
        child: Padding(
          padding: EdgeInsets.all(10.0),
          child: Card(
            child: Container(
              width: 200,
              height: 200,
              color: Colors.blue,
            ),
          ),
        ),
      ),
    );
  }
}