Flutter 

flutter is a frame work that are use to develop  mobile Application. It uses Dart language  to develop logic on mobile application .

                                      

Above picture is the logo of flutter Framework . In flutter Everything is widgets .When we talk about flutter their will be widgets like scaffold ,column, center ,Material app etc. And this Widgets has their own attributes with different different functionality that are used to develop mobile application.

FOR EXAMPLE:

Material app

//Firstly we need to import material.dart package

import 'package:flutter/material.dart';

void main(){
  runApp(MyApp());
}

class MyApp extends StatefulWidget {
  @override
  _MyAppState createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: "Chess",
      theme: ThemeData(
        primarySwatch: Colors.red
      ),
      home:Homepage(),
      
    );
  }
}
                                                  
                                        
//Here title,theme,home is the attributes of MaterialApp widgets .