zhiying_base_widget/lib/widgets/home_banner.dart

import 'package:flutter/material.dart';

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

  @override
  Widget build(BuildContext context) {
    return Container(
      width: double.infinity,
      height: 200,
      color: Colors.redAccent,
    );
  }
}