sign up feature first version done

packages/design_system/lib/src/dropdowns/dropdown.dart

@@ -3,7 +3,9 @@ import 'package:flutter/material.dart';
 class CustomDropdown extends StatelessWidget {
   final List<Widget> items;
   final List<dynamic>? values;
+
   final ValueChanged<dynamic> onChanged;
+
   final dynamic value;
   final String? hint;
   final String? label;
@@ -28,10 +30,15 @@ class CustomDropdown extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
+    final borderColor = color ?? const Color(0xFF4B4B4B);
+
+    OutlineInputBorder border(Color c) => OutlineInputBorder(
+      borderRadius: BorderRadius.all(Radius.circular(radius)),
+      borderSide: BorderSide(color: c),
+    );
     return Column(
-      spacing: 8,
       children: [
-        if (label != null)
+        if (label != null) ...[
           Align(
             alignment: Alignment.bottomLeft,
             child: Text(
@@ -39,6 +46,8 @@ class CustomDropdown extends StatelessWidget {
               style: const TextStyle(fontSize: 14, letterSpacing: 0),
             ),
           ),
+          const SizedBox(height: 8),
+        ],
         SizedBox(
           width: width,
           height: height,
@@ -46,15 +55,21 @@ class CustomDropdown extends StatelessWidget {
             child: DropdownButtonFormField<dynamic>(
               dropdownColor: Colors.white,
               decoration: InputDecoration(
-                enabledBorder: OutlineInputBorder(
-                  borderRadius: BorderRadius.all(Radius.circular(radius)),
-                  borderSide: BorderSide(
-                    color: color ?? const Color(0xFF4B4B4B),
-                  ),
+                enabledBorder: border(borderColor),
+                focusedBorder: border(borderColor),
+                disabledBorder: border(borderColor),
+                errorBorder: border(borderColor),
+                focusedErrorBorder: border(borderColor),
+                contentPadding: const EdgeInsets.symmetric(
+                  horizontal: 12,
+                  vertical: 16,
                 ),
               ),
+
               initialValue: value,
+
               onChanged: onChanged,
+
               hint: hint != null ? Text(hint!) : null,
               items: List<DropdownMenuItem<dynamic>>.generate(items.length, (
                 int index,