The navbar has become dynamic

[ayush25102001]

🛠️ Fixes Issue #169

• My code follows the code style of this project.
• This PR does not contain plagiarized content.
• The title of my pull request is a short description of the requested changes.

📷 Screenshots

When login is not done even logout button is not visible

When logged in, no login and signUp options are shown and logout is visible

@KaizenGirl1111 mam please review