Added theme, reworked UI

lib/pages/data/widgets/account_settings.dart

@@ -1,6 +1,7 @@
 import 'package:flutter/material.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
 import 'package:tunas/domains/account/account_bloc.dart';
+import 'package:tunas/pages/common/titled_container.dart';
 
 class AccountSettings extends StatelessWidget {
   const AccountSettings({super.key});
@@ -16,34 +17,15 @@ class AccountSettings extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return BlocBuilder<AccountBloc, AccountState>(
-      builder: (context, state) => Container(
-        decoration: BoxDecoration(
-          color: Colors.blue,
-          borderRadius: BorderRadius.circular(5),
+      builder: (context, state) => TitledContainer(
+        title: "Accounts",
+        child: SingleChildScrollView(
+          scrollDirection: Axis.vertical,
+          child: Column(
+            crossAxisAlignment: CrossAxisAlignment.start,
+            children: _computeCategoryList(state.subAccounts),
+          ),
         ),
-        padding: const EdgeInsets.symmetric(vertical: 10, horizontal: 15),
-        margin: const EdgeInsets.all(5),
-        child: Column(
-          mainAxisSize: MainAxisSize.min,
-          crossAxisAlignment: CrossAxisAlignment.start,
-          children: [
-            const Text(
-              "Accounts",
-              style: TextStyle(
-                fontWeight: FontWeight.w900,
-                fontSize: 20,
-              ),
-            ),
-            const SizedBox(height: 10),
-            SingleChildScrollView(
-              scrollDirection: Axis.vertical,
-              child: Column(
-                crossAxisAlignment: CrossAxisAlignment.start,
-                children: _computeCategoryList(state.subAccounts),
-              ),
-            ),
-          ],
-        ) 
       ),
     );
   }