Greasy Fork镜像

Now also works in fullscreen mode.

Improvements have been implemented for enhanced functionality, usability, and styling.

-CSS Style Corrections: Improved the styling for better visibility and presentation of the BPM and track information.

-Error Messages Added: Implemented user-friendly error messages related to the Spotify API, ensuring that users are informed about the status of their API keys and any issues that may arise during the script's execution.