1. Responsive Columns:
The CSS Grid column media rules in style.css perfectly replicate the column calculations of the Flutter LayoutBuilder (1 column on mobile, 2 on tablet, and 3 on widescreen screens).
2. Dynamic Ad Injection:
In the web preview, when the switch is toggled, it mimics an ad network script resolving its payload by rendering high-fidelity, interactive mock ads inside the layout card.
3. Dart Integration Tip:
Check out flutter_fixed.dart to see how the syntax issues have been fixed and how to register platform views on Web.