diff --git a/source.md b/source.md
index 64c56fd..ff3cc58 100644
--- a/source.md
+++ b/source.md
@@ -71,7 +71,6 @@ If you appreciate the content 📖, support projects visibility, give 👍| ⭐|
 - [Norbert](https://medium.com/@norbertkozsir) - In depth articles, features and app creation by [Norbert515](https://github.com/Norbert515)
 - [Flutter Tips](https://medium.com/@diegoveloper) - Articles, tips & tricks in the development by [Diego Velásquez](https://twitter.com/diegoveloper)
 - [FilledStacks](https://www.filledstacks.com/) - Tutorials and guides on development by [Dane Mackier](https://www.instagram.com/filledstacks/)
-- [Flutter Widget Live Book](https://flutter-widget-livebook.blankapp.org/) - Live preview example for flutter widgets by [JianyingLi](https://github.com/lijy91/)
 
 ### Tutorial
 
@@ -124,6 +123,10 @@ If you appreciate the content 📖, support projects visibility, give 👍| ⭐|
 - [Flutter Examples](https://github.com/nisrulz/flutter-examples) <!--stargazers:nisrulz/flutter-examples--> - Simple basic isolated apps for devs by [Nishant Srivastava](https://github.com/nisrulz)
 - [Flutter Catalog](https://github.com/X-Wei/flutter_catalog) <!--stargazers:X-Wei/flutter_catalog--> - An app showcasing Flutter components, with side-by-side source code view, by [X-Wei](https://github.com/X-Wei)
 
+#### Web Demonstration
+
+- [Flutter Widget Live Book](https://flutter-widget-livebook.blankapp.org/) - Live web preview of widgets by [JianyingLi](https://github.com/lijy91/)
+
 ### UI
 
 - [Contact Picker](https://github.com/goderbauer/contact_picker) <!--stargazers:goderbauer/contact_picker--> - Picking contact from the address book by [Michael Goderbauer](https://github.com/goderbauer)