- séparation des taches faite et non,

- rapettisage de la taille des taches

lib/utils/my_button.dart

@@ -1,18 +1,18 @@
 import 'package:flutter/material.dart';
 
 class MyButton extends StatelessWidget {
-  MyButton({Key? key, required this.text, required this.onPressed})
+  const MyButton({Key? key, required this.text, required this.onPressed})
       : super(key: key);
 
   final String text;
-  VoidCallback onPressed;
+  final VoidCallback onPressed;
 
   @override
   Widget build(BuildContext context) {
     return MaterialButton(
       onPressed: onPressed,
       color: Theme.of(context).primaryColor,
-      child: Text(text),
+      child: Text(text, style: const TextStyle(color: Colors.white)),
     );
   }
 }