add box selected product

lib/Screens/Sales/add_sales.dart

@@ -188,7 +188,7 @@ class AddSalesScreenState extends ConsumerState<AddSalesScreen> {
           ),
           body: SingleChildScrollView(
             child: Padding(
-              padding: const EdgeInsets.all(20.0),
+              padding: const EdgeInsets.fromLTRB(20.0, 20.0, 20.0, 100.0),
               child: Column(
                 children: [
                   ///_______Invoice_And_Date_____________________________________________________

lib/Screens/Sales/provider/sales_cart_provider.dart

@@ -222,4 +222,8 @@ class CartNotifier extends ChangeNotifier {
     );
     calculatePrice();
   }
-}
+
+  num getTotalAmount() {
+    return totalPayableAmount;
+  }
+}