Improve navbar css

[39palakved]

Category of documentation update

Navbar

Describe the change you think might work

I will reduce padding and add hover and change font and will add good logo

Checklist

• [X] I have checked the existing issues.
• [X] I follow Contributing Guidelines of this project.
• [ ] I am a IWOC'24 contributor.
• [ ] I am a JWOC'24 contributor.
• [X] I am a SWOC'24 contributor.

Code of Conduct

• [X] I agree to follow this project's "Code of Conduct".