Add dark background and GitHub avatar header bar

Author: will-ch-h

lib/main.dart

@@ -9,12 +9,32 @@ class MyApp extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    return const MaterialApp(
+    return MaterialApp(
       debugShowCheckedModeBanner: false,
-      home: Scaffold(
-        body: Center(
-          child: Text('test'),
-        ),
+      theme: ThemeData(scaffoldBackgroundColor: const Color(0xFF2B2B2B)),
+      home: const HomePage(),
+    );
+  }
+}
+
+class HomePage extends StatelessWidget {
+  const HomePage({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      body: Column(
+        children: [
+          Container(
+            width: double.infinity,
+            color: const Color(0xFF3A3A3A),
+            padding: const EdgeInsets.all(16),
+            child: const CircleAvatar(
+              radius: 36,
+              backgroundImage: NetworkImage('https://github.com/will-ch-h.png'),
+            ),
+          ),
+        ],
       ),
     );
   }