diff --git a/lib/main.dart b/lib/main.dart
index a4bce4d..9210bc0 100644
--- a/lib/main.dart
+++ b/lib/main.dart
@@ -10,6 +10,9 @@ import 'package:learn/pages/solar.dart';
 import 'package:learn/utils/routes.dart';
 import 'package:learn/widgets/drawer.dart';
 import 'package:learn/pages/colours.dart';
+import 'package:fluttertoast/fluttertoast.dart';
+
+DateTime? currentBackPressTime;
 
 void main() async {
   WidgetsFlutterBinding.ensureInitialized();
@@ -63,236 +66,255 @@ class _MyHomePageState extends State<MyHomePage> {
   bool _isImageClicked3 = false;
   bool _isImageClicked4 = false;
   bool _isDarkTheme = false;
+
+  Future<bool> _onBackPressed() {
+    DateTime now = DateTime.now();
+    if (currentBackPressTime == null ||
+        now.difference(currentBackPressTime!) > const Duration(seconds: 2)) {
+      currentBackPressTime = now;
+      Fluttertoast.showToast(
+        msg: "Press back again to exit",
+        toastLength: Toast.LENGTH_SHORT,
+        gravity: ToastGravity.BOTTOM,
+      );
+      return Future.value(false);
+    }
+    return Future.value(true);
+  }
+
   @override
   Widget build(BuildContext context) {
-    return Scaffold(
-      appBar: AppBar(
-        title: const Text(
-          'Home',
-          style: TextStyle(fontWeight: FontWeight.bold),
-        ),
-        actions: [
-          IconButton(
-            icon: Icon(
-              _isDarkTheme ? Icons.dark_mode : Icons.light_mode,
-            ),
-            onPressed: () {
-              setState(() {
-                _isDarkTheme = !_isDarkTheme;
-              });
-              final themeMode = Theme.of(context).brightness == Brightness.dark
-                  ? AdaptiveThemeMode.light
-                  : AdaptiveThemeMode.dark;
-              AdaptiveTheme.of(context).setThemeMode(themeMode);
-            },
+    return WillPopScope(
+      onWillPop: _onBackPressed,
+      child: Scaffold(
+        appBar: AppBar(
+          title: const Text(
+            'Home',
+            style: TextStyle(fontWeight: FontWeight.bold),
           ),
-        ],
-      ),
-      body: SingleChildScrollView(
-        child: Padding(
-          padding: const EdgeInsets.all(38.0),
-          child: Column(
-            children: [
-              GestureDetector(
-                onTap: () {
-                  setState(() {
-                    _isImageClicked1 = !_isImageClicked1;
-                  });
-                  Future.delayed(const Duration(milliseconds: 300), () {
-                    Navigator.pushNamed(context, AllRoutes.atozRoute);
-                  });
-                },
-                child: AnimatedContainer(
-                  duration: const Duration(milliseconds: 300),
-                  curve: Curves.easeInOut,
-                  height: _isImageClicked1 ? 325 : 350,
-                  decoration: BoxDecoration(
-                    borderRadius: BorderRadius.circular(12),
-                    border: Border.all(color: Colors.black, width: 2),
-                    boxShadow: [
-                      BoxShadow(
-                        color: Colors.black.withOpacity(0.2),
-                        spreadRadius: 2,
-                        blurRadius: 5,
-                        offset: const Offset(0, 3),
+          actions: [
+            IconButton(
+              icon: Icon(
+                _isDarkTheme ? Icons.dark_mode : Icons.light_mode,
+              ),
+              onPressed: () {
+                setState(() {
+                  _isDarkTheme = !_isDarkTheme;
+                });
+                final themeMode = Theme.of(context).brightness == Brightness.dark
+                    ? AdaptiveThemeMode.light
+                    : AdaptiveThemeMode.dark;
+                AdaptiveTheme.of(context).setThemeMode(themeMode);
+              },
+            ),
+          ],
+        ),
+        body: SingleChildScrollView(
+          child: Padding(
+            padding: const EdgeInsets.all(38.0),
+            child: Column(
+              children: [
+                GestureDetector(
+                  onTap: () {
+                    setState(() {
+                      _isImageClicked1 = !_isImageClicked1;
+                    });
+                    Future.delayed(const Duration(milliseconds: 300), () {
+                      Navigator.pushNamed(context, AllRoutes.atozRoute);
+                    });
+                  },
+                  child: AnimatedContainer(
+                    duration: const Duration(milliseconds: 300),
+                    curve: Curves.easeInOut,
+                    height: _isImageClicked1 ? 325 : 350,
+                    decoration: BoxDecoration(
+                      borderRadius: BorderRadius.circular(12),
+                      border: Border.all(color: Colors.black, width: 2),
+                      boxShadow: [
+                        BoxShadow(
+                          color: Colors.black.withOpacity(0.2),
+                          spreadRadius: 2,
+                          blurRadius: 5,
+                          offset: const Offset(0, 3),
+                        ),
+                      ],
+                      image: const DecorationImage(
+                        image: AssetImage('assets/images/alphabets.jpg'),
+                        fit: BoxFit.cover,
                       ),
-                    ],
-                    image: const DecorationImage(
-                      image: AssetImage('assets/images/alphabets.jpg'),
-                      fit: BoxFit.cover,
                     ),
                   ),
                 ),
-              ),
-              const SizedBox(height: 20),
-              const Text(
-                'ALPHABETS',
-                style: TextStyle(fontSize: 24, fontWeight: FontWeight.bold),
-              ),
-              const Text("Learn A to Z with pronunciation and an example"),
-              const SizedBox(
-                height: 20,
-              ),
-              GestureDetector(
-                onTap: () {
-                  setState(() {
-                    _isImageClicked2 = !_isImageClicked2;
-                  });
-                  Future.delayed(const Duration(milliseconds: 300), () {
-                    Navigator.pushNamed(context, AllRoutes.animalRoute);
-                  });
-                },
-                child: AnimatedContainer(
-                  duration: const Duration(milliseconds: 300),
-                  curve: Curves.easeInOut,
-                  height: _isImageClicked2 ? 325 : 350,
-                  decoration: BoxDecoration(
-                    borderRadius: BorderRadius.circular(12),
-                    border: Border.all(color: Colors.black, width: 2),
-                    boxShadow: [
-                      BoxShadow(
-                        color: Colors.black.withOpacity(0.2),
-                        spreadRadius: 2,
-                        blurRadius: 5,
-                        offset: const Offset(0, 3),
+                const SizedBox(height: 20),
+                const Text(
+                  'ALPHABETS',
+                  style: TextStyle(fontSize: 24, fontWeight: FontWeight.bold),
+                ),
+                const Text("Learn A to Z with pronunciation and an example"),
+                const SizedBox(
+                  height: 20,
+                ),
+                GestureDetector(
+                  onTap: () {
+                    setState(() {
+                      _isImageClicked2 = !_isImageClicked2;
+                    });
+                    Future.delayed(const Duration(milliseconds: 300), () {
+                      Navigator.pushNamed(context, AllRoutes.animalRoute);
+                    });
+                  },
+                  child: AnimatedContainer(
+                    duration: const Duration(milliseconds: 300),
+                    curve: Curves.easeInOut,
+                    height: _isImageClicked2 ? 325 : 350,
+                    decoration: BoxDecoration(
+                      borderRadius: BorderRadius.circular(12),
+                      border: Border.all(color: Colors.black, width: 2),
+                      boxShadow: [
+                        BoxShadow(
+                          color: Colors.black.withOpacity(0.2),
+                          spreadRadius: 2,
+                          blurRadius: 5,
+                          offset: const Offset(0, 3),
+                        ),
+                      ],
+                      image: const DecorationImage(
+                        image: AssetImage('assets/images/animals.jpg'),
+                        fit: BoxFit.cover,
                       ),
-                    ],
-                    image: const DecorationImage(
-                      image: AssetImage('assets/images/animals.jpg'),
-                      fit: BoxFit.cover,
                     ),
                   ),
                 ),
-              ),
-              const SizedBox(height: 20),
-              const Text(
-                'ANIMALS',
-                style: TextStyle(fontSize: 24, fontWeight: FontWeight.bold),
-              ),
-              const Text("Learn about animals and their voices"),
-              const SizedBox(
-                height: 20,
-              ),
-              GestureDetector(
-                onTap: () {
-                  setState(() {
-                    _isImageClicked3 = !_isImageClicked3;
-                  });
-                  Future.delayed(const Duration(milliseconds: 300), () {
-                    Navigator.pushNamed(context, AllRoutes.partsRoute);
-                  });
-                },
-                child: AnimatedContainer(
-                  duration: const Duration(milliseconds: 300),
-                  curve: Curves.easeInOut,
-                  height: _isImageClicked3 ? 325 : 350,
-                  decoration: BoxDecoration(
-                    borderRadius: BorderRadius.circular(12),
-                    border: Border.all(color: Colors.black, width: 2),
-                    boxShadow: [
-                      BoxShadow(
-                        color: Colors.black.withOpacity(0.2),
-                        spreadRadius: 2,
-                        blurRadius: 5,
-                        offset: const Offset(0, 3),
+                const SizedBox(height: 20),
+                const Text(
+                  'ANIMALS',
+                  style: TextStyle(fontSize: 24, fontWeight: FontWeight.bold),
+                ),
+                const Text("Learn about animals and their voices"),
+                const SizedBox(
+                  height: 20,
+                ),
+                GestureDetector(
+                  onTap: () {
+                    setState(() {
+                      _isImageClicked3 = !_isImageClicked3;
+                    });
+                    Future.delayed(const Duration(milliseconds: 300), () {
+                      Navigator.pushNamed(context, AllRoutes.partsRoute);
+                    });
+                  },
+                  child: AnimatedContainer(
+                    duration: const Duration(milliseconds: 300),
+                    curve: Curves.easeInOut,
+                    height: _isImageClicked3 ? 325 : 350,
+                    decoration: BoxDecoration(
+                      borderRadius: BorderRadius.circular(12),
+                      border: Border.all(color: Colors.black, width: 2),
+                      boxShadow: [
+                        BoxShadow(
+                          color: Colors.black.withOpacity(0.2),
+                          spreadRadius: 2,
+                          blurRadius: 5,
+                          offset: const Offset(0, 3),
+                        ),
+                      ],
+                      image: const DecorationImage(
+                        image: AssetImage('assets/body/body.jpg'),
+                        fit: BoxFit.cover,
                       ),
-                    ],
-                    image: const DecorationImage(
-                      image: AssetImage('assets/body/body.jpg'),
-                      fit: BoxFit.cover,
                     ),
                   ),
                 ),
-              ),
-              const SizedBox(height: 20),
-              const Text(
-                'BODY PARTS',
-                style: TextStyle(fontSize: 24, fontWeight: FontWeight.bold),
-              ),
-              const Text("Know about body parts and their pronunciation."),
-              const SizedBox(height: 20),
-              GestureDetector(
-                onTap: () {
-                  setState(() {
-                    _isImageClicked4 = !_isImageClicked4;
-                  });
-                  Future.delayed(const Duration(milliseconds: 300), () {
-                    Navigator.pushNamed(context, AllRoutes.birdsRoute);
-                  });
-                },
-                child: AnimatedContainer(
-                  duration: const Duration(milliseconds: 300),
-                  curve: Curves.easeInOut,
-                  height: _isImageClicked4 ? 325 : 350,
-                  decoration: BoxDecoration(
-                    borderRadius: BorderRadius.circular(12),
-                    border: Border.all(color: Colors.black, width: 2),
-                    boxShadow: [
-                      BoxShadow(
-                        color: Colors.black.withOpacity(0.2),
-                        spreadRadius: 2,
-                        blurRadius: 5,
-                        offset: const Offset(0, 3),
+                const SizedBox(height: 20),
+                const Text(
+                  'BODY PARTS',
+                  style: TextStyle(fontSize: 24, fontWeight: FontWeight.bold),
+                ),
+                const Text("Know about body parts and their pronunciation."),
+                const SizedBox(height: 20),
+                GestureDetector(
+                  onTap: () {
+                    setState(() {
+                      _isImageClicked4 = !_isImageClicked4;
+                    });
+                    Future.delayed(const Duration(milliseconds: 300), () {
+                      Navigator.pushNamed(context, AllRoutes.birdsRoute);
+                    });
+                  },
+                  child: AnimatedContainer(
+                    duration: const Duration(milliseconds: 300),
+                    curve: Curves.easeInOut,
+                    height: _isImageClicked4 ? 325 : 350,
+                    decoration: BoxDecoration(
+                      borderRadius: BorderRadius.circular(12),
+                      border: Border.all(color: Colors.black, width: 2),
+                      boxShadow: [
+                        BoxShadow(
+                          color: Colors.black.withOpacity(0.2),
+                          spreadRadius: 2,
+                          blurRadius: 5,
+                          offset: const Offset(0, 3),
+                        ),
+                      ],
+                      image: const DecorationImage(
+                        image: AssetImage('assets/images/birds.jpg'),
+                        fit: BoxFit.cover,
                       ),
-                    ],
-                    image: const DecorationImage(
-                      image: AssetImage('assets/images/birds.jpg'),
-                      fit: BoxFit.cover,
                     ),
                   ),
                 ),
-              ),
-              const SizedBox(height: 20),
-              const Text(
-                'BIRDS',
-                style: TextStyle(fontSize: 24, fontWeight: FontWeight.bold),
-              ),
-              const Text("Look out for Birds with their sounds."),
-              
-              const SizedBox(height: 20),
-              GestureDetector(
-                onTap: () {
-                  setState(() {
-                    _isImageClicked4 = !_isImageClicked4;
-                  });
-                  Future.delayed(const Duration(milliseconds: 300), () {
-                    Navigator.pushNamed(context, AllRoutes.colourRoute);
-                  });
-                },
-                child: AnimatedContainer(
-                  duration: const Duration(milliseconds: 300),
-                  curve: Curves.easeInOut,
-                  height: _isImageClicked4 ? 325 : 350,
-                  decoration: BoxDecoration(
-                    borderRadius: BorderRadius.circular(12),
-                    border: Border.all(color: Colors.black, width: 2),
-                    boxShadow: [
-                      BoxShadow(
-                        color: Colors.black.withOpacity(0.2),
-                        spreadRadius: 2,
-                        blurRadius: 5,
-                        offset: const Offset(0, 3),
+                const SizedBox(height: 20),
+                const Text(
+                  'BIRDS',
+                  style: TextStyle(fontSize: 24, fontWeight: FontWeight.bold),
+                ),
+                const Text("Look out for Birds with their sounds."),
+
+                const SizedBox(height: 20),
+                GestureDetector(
+                  onTap: () {
+                    setState(() {
+                      _isImageClicked4 = !_isImageClicked4;
+                    });
+                    Future.delayed(const Duration(milliseconds: 300), () {
+                      Navigator.pushNamed(context, AllRoutes.colourRoute);
+                    });
+                  },
+                  child: AnimatedContainer(
+                    duration: const Duration(milliseconds: 300),
+                    curve: Curves.easeInOut,
+                    height: _isImageClicked4 ? 325 : 350,
+                    decoration: BoxDecoration(
+                      borderRadius: BorderRadius.circular(12),
+                      border: Border.all(color: Colors.black, width: 2),
+                      boxShadow: [
+                        BoxShadow(
+                          color: Colors.black.withOpacity(0.2),
+                          spreadRadius: 2,
+                          blurRadius: 5,
+                          offset: const Offset(0, 3),
+                        ),
+                      ],
+                      image: const DecorationImage(
+                        image: AssetImage('assets/images/colours/colors-cover.png'),
+                        fit: BoxFit.cover,
                       ),
-                    ],
-                    image: const DecorationImage(
-                      image: AssetImage('assets/images/colours/colors-cover.png'),
-                      fit: BoxFit.cover,
                     ),
                   ),
                 ),
-              ),
-              const SizedBox(height: 20),
-              const Text(
-                'COLOURS',
-                style: TextStyle(fontSize: 24, fontWeight: FontWeight.bold),
-              ),
-              const Text("Explore and learn about the colours!"),
+                const SizedBox(height: 20),
+                const Text(
+                  'COLOURS',
+                  style: TextStyle(fontSize: 24, fontWeight: FontWeight.bold),
+                ),
+                const Text("Explore and learn about the colours!"),
 
-            ],
+              ],
+            ),
           ),
         ),
+        drawer: const MyDrawer(),
       ),
-      drawer: const MyDrawer(),
     );
   }
 }
diff --git a/lib/pages/atoz.dart b/lib/pages/atoz.dart
index e0b1937..d5604e2 100644
--- a/lib/pages/atoz.dart
+++ b/lib/pages/atoz.dart
@@ -1,3 +1,4 @@
+
 import 'package:flutter/material.dart';
 import 'package:flutter_svg/flutter_svg.dart';
 import 'dart:async';
diff --git a/pubspec.lock b/pubspec.lock
index b1ad106..b1849e9 100644
--- a/pubspec.lock
+++ b/pubspec.lock
@@ -160,6 +160,14 @@ packages:
     description: flutter
     source: sdk
     version: "0.0.0"
+  fluttertoast:
+    dependency: "direct main"
+    description:
+      name: fluttertoast
+      sha256: "81b68579e23fcbcada2db3d50302813d2371664afe6165bc78148050ab94bf66"
+      url: "https://pub.dev"
+    source: hosted
+    version: "8.2.5"
   google_fonts:
     dependency: "direct main"
     description:
diff --git a/pubspec.yaml b/pubspec.yaml
index dddf80e..0e1c10e 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -42,6 +42,7 @@ dependencies:
   card_swiper: ^3.0.1
   flutter_card_swiper: ^7.0.0
   adaptive_theme: ^3.6.0
+  fluttertoast: ^8.2.5
 
 dev_dependencies:
   flutter_test:
@@ -74,6 +75,7 @@ flutter:
     - assets/solar/
     - assets/images/colours/
 
+
   # An image asset can refer to one or more resolution-specific "variants", see
   # https://flutter.dev/assets-and-images/#resolution-aware