changed dropdownmenu and button theme

lib/app_theme.dart

@@ -34,6 +34,26 @@ class AppTheme {
           side: BorderSide(color: colorScheme.secondaryContainer, width: 2),
         ),
       ),
+      elevatedButtonTheme: ElevatedButtonThemeData(
+        style: ButtonStyle(
+          minimumSize: WidgetStatePropertyAll(Size(0, 56)),
+          shape: WidgetStateOutlinedBorder.resolveWith(
+            (states) =>
+                RoundedRectangleBorder(borderRadius: universalBorderRadius),
+          ),
+        ),
+      ),
+      dropdownMenuTheme: DropdownMenuThemeData(
+        inputDecorationTheme: InputDecorationThemeData(
+          border: OutlineInputBorder(borderRadius: universalBorderRadius),
+        ),
+        menuStyle: MenuStyle(
+          shape: WidgetStateOutlinedBorder.resolveWith(
+            (states) =>
+                RoundedRectangleBorder(borderRadius: universalBorderRadius),
+          ),
+        ),
+      ),
     );
   }
 }