Ui Update for Navbar On Scroll Time

[aloku901]

@bishalde Please Assigned This issue to me to update the UI page if you scroll the page Up then the Navbar does not Look Visible make it pure white or Some new design we create

Please assign this under GSSOC label

[Shubham-Zone]

@bishalde please assign this to me i am GSSOC'24 contributor and have 2+ years of experience in development