Update details_screen.dart

lib/screens/details/details_screen.dart

@@ -14,12 +14,15 @@ 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(
       backgroundColor: kBackgroundColor,