This single-file application is a professional-grade tool designed for developers to experiment with Mapbox GL JS camera parameters. It is fully responsive, uses a modern SaaS-inspired design, and is built for complete portability.
**Setup Instructions:**
To use this, save the code below as an `.html` file. **Crucial:** You must replace `'YOUR_MAPBOX_ACCESS_TOKEN'` in the JavaScript section with your own valid Mapbox Public Access Token for the map to render.
```html
Free Mapbox GL JS Pitch & Bearing Camera Angle Tester