customize card in flutter,
import 'package:flutter/material.dart';

final 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:
          Row(children: [
            
            // image row (leading)
            Container(height:120.0,width:120.0,
             
                decoration: BoxDecoration(
                borderRadius: BorderRadius.only(
                  topLeft: Radius.circular(16),
                  bottomLeft: Radius.circular(16)),
               
                image: DecorationImage(image: NetworkImage(
                  'https://picsum.photos/250?image=9',
                  )),
              
            )),

             // text row (middle)
              Container(height:120,width:200,
                    decoration: BoxDecoration(
        
                      
                      color: Colors.white,
                    ),//boxdecor
                    padding: EdgeInsets.all(8),
                    child: _buildContent(),
                  ),//container 
            
            
               // chip row wrap this in gesture detector (end)
                    Container(height:120,width:80,
                    decoration: BoxDecoration(
                      borderRadius:
                          BorderRadius.horizontal(right:Radius.circular(16)),
                      
                      color: Colors.white,
                    ),//boxdecor
                    padding: EdgeInsets.all(8),
                    child:    Chip(backgroundColor: Colors.black,label:Text('add')),
                  ),//container  
            
         ],),
            
         ),
        
      ),
    );
  }
  
 Widget _buildContent() {
    return Column(
      children: [
        SizedBox(height: 8),
        Row(
          children: [
            Text(
              '1 ticket',
              style: TextStyle(
                fontWeight: FontWeight.w500,
                fontSize: 12,
                color: Colors.grey.shade600,
              ),
            ),
            SizedBox(width: 8),
            Text(
              'goodbye',
              style: TextStyle(
                fontWeight: FontWeight.w300,
                fontSize: 12,
                color: Colors.grey,
              ),
            ),
        
          ]),
        //SizedBox(height:8),
        
        Text('--another      line            ',style:TextStyle(color:Colors.black)),
 
      ],);//row
   
  }