Update details_screen.dart

lib/screens/details/details_screen.dart

@@ -14,11 +14,14 @@ class DetailsScreen extends StatelessWidget {
     return Scaffold(
       backgroundColor: kPrimaryColor,
       appBar: buildAppBar(context),
+    //..call the product
       body: Body(
         product: product,
       ),
     );
   }
+  
+  //add btns*back btn,*onpressed()
 
   AppBar buildAppBar(BuildContext context) {
     return AppBar(