feat: scroll back to top button.

[Tholkappiar]

Pull Request: Adding Scroll-to-Top Feature

Description: I've added a scroll-to-top button functionality to enhance the user experience on the webpage. Now users can easily navigate to the top of the page with a single click.

Changes:

• Implemented scroll-to-top button.
• Updated CSS selector for better visibility.
• Tested on different screen sizes to ensure responsiveness.

Screenshots:

How to Test:

1. Scroll down the page.
2. Observe the appearance of the scroll-to-top button.
3. Click on the button and ensure it smoothly scrolls to the top.

Related Issues: Closes #27

Thank you for the valuable time and considerations .

[Pavel401]

@all-contributors please add @Tholkappiar for code

[allcontributors[bot]]

@Pavel401

I've put up a pull request to add @Tholkappiar! :tada: