updated convert.html for duplicate ui

[Nikhilrsingh]

Description

updated convert.html for duplicate ui and back to top/bottom buttons working in all pages.

Type of change

• Bug fix
• Improvement
• Documentation update

How Has This Been Tested?

by checking convert.html page

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my code
• I have commented my code where necessary
• I have added tests that prove my fix is effective or that my feature works

[github-actions]

Thanks for creating a PR for your Issue! ☺️

We'll review it as soon as possible.
In the meantime, please double-check the file changes and ensure that all commits are accurate.

If there are any unresolved review comments, feel free to resolve them. 🙌🏼

[Nikhilrsingh]

@supriya46788 maam duplicate ui corrected in convert.html and back to top/bottom buttons working in all nav pages properly

[supriya46788]

@Nikhilrsingh i told you to make scroll to top / button feature again because i reverted your pr...please check again and add it