Add CSS and more friendly UI design to /updatett.html

[psk907]

Looking for someone to add a touch of styling through basic CSS to the below page.

Keep the UI simple and do not break the functionality

Instructions to developers:

1. Fork the repository and clone it
2. If you don't want to setup a Vercel environment and Deta DB, simply run a local server for the html at public/
3. Comment out lines 65 & 66 in script.js to avoid unnecessary API calls and store a sample list of links obtained from https://zoom-autolink.vercel.app/api/gettt (Use Postman or similar tool) in class_data
4. Add your CSS as required in the html and dynamic components in the script.js.
5. Revert the changes caused by step 3.
6. Push your changes and create a PR with a screenshot.

Comment down below if you are interested.

[psk907]

Basic styling and flex containers have been added by @SJellen through #2 and merged.

Preview:

Keeping this issue open for further enhancements. xD