[Feature] Navbar sticky

[harinisayani]

Description

I want to make navbar sticky. Please assign me this issue. I want to work on this issue.

Screenshots

No response

Checklist

• [X] I have checked the existing issues.
• [X] I follow Contributing Guidelines of this project.
• [X] I am a GSSoC'24 contributor.
• [X] I want to work on this issue.

Code of Conduct

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