diff --git a/lib/screens/web.dart b/lib/screens/web.dart
index 9eda3d5..48d2fd7 100644
--- a/lib/screens/web.dart
+++ b/lib/screens/web.dart
@@ -67,7 +67,7 @@ class BarcodeScanner extends StatelessWidget {
     ui.platformViewRegistry
         .registerViewFactory(createdViewId, (int viewId) => iframe);
     final width = MediaQuery.of(context).size.width;
-    final height = width / (16 / 9);
+    final height = MediaQuery.of(context).size.height;
     return Scaffold(
       appBar: _buildAppBar(context),
       body: SingleChildScrollView(