Update secret management in app.py to use environment variable for storage key

Refactor image display settings in app.py by adding CSS for image size control and updating the result image component to include a CSS class for styling.

Remove saved message functionality from settings in app.py

Enhance error handling in generate_image function to provide more specific feedback for API authentication and network errors.

Remove debug print statement from load_from_local_storage function in app.py

Initial Commit

Duplicate from gradio-templates/text-to-image-gradio-template