added feature underline button Hover Effects

[Utkarsh3128]

Description

added underline button hover effect in Navbar

Fixes #761

Screenshots

Checklist

<! -- Mark the completed tasks with [x] -->

• [x] Tests have been added or updated to cover the changes
• [x] Documentation has been updated to reflect the changes
• [x] Code follows the established coding style guidelines
• [x] All tests are passing