Devices with dual screens are coming to the market. How do we as web developers make sure that our applications provide the best possible UX for any screen configuration and layout? In this session, we’ll talk about what’s coming to CSS and Web APIs to help us with solving this challenge, and how to start building your dual screen ready web app today!

https://docs.microsoft.com/en-us/dual-screen/web/desktop-developer-tools
https://blogs.windows.com/msedgedev/2020/09/14/introducing-dual-screen-foldable-web-apis/
https://aka.ms/foldables-explainer
https://devblogs.microsoft.com/surface-duo/build-and-test-dual-screen-web-apps/