Make Navbar visible on top when start scolling down from anywhere in website

[Utsavladia]

Description

The navbar should be visible at top and if we want to hide it then it should be visible again when the user start to scroll down anywhere this will improve the user experience and make website look great...

Screenshots

Checklist

• [X] I have checked the existing issues.
• [X] I have read the Contributing Guidelines
• [X] I have read the Code Of Conduct
• [X] The changes don't break the code