- Update index.html to include a fixed, horizontally scrolling marquee at the bottom.
- Use CSS keyframes to animate guest entries, showing first name and location.
- Enhance user interface by providing a dynamic display of entries.
- Validate that first_name, last_name, email, and location are provided
- Add regex-based email format validation in app.py
- Display error messages on the guestbook form if validation fails
These changes help ensure that only properly formatted data is stored.
