component: collapsible component 1

All collapsed:

<img width="416" height="852" alt="Image" src="https://github.com/user-attachments/assets/96de7ec7-2719-4a82-89b7-f521e8c2e91b" />


Expanded:

<img width="416" height="852" alt="Image" src="https://github.com/user-attachments/assets/738f7b82-b9f4-4bda-8692-faa9730b98af" />

Refer to 
- https://playground.react.dev/
- click show internals