🚧🐛 fix(navbar): media query responsive

[Developer-Gitonga]

Medium screen and small screen responsive.

[github-actions[bot]]

Visit the preview URL for this PR (updated for commit 6e51b16):

https://andika-16cf6--pr123-navresponse-hcfytwl8.web.app

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[pmutua]

@Developer-Gitonga I have tested the navbar but we are not there yet the application is not yet responsive. Here is the link showing myself testing on different screens https://share.vidyard.com/watch/nQg7N3E6nGDjaPCkAo1Taa?

[pmutua]

@Developer-Gitonga Ensure that the navbar items only appear when the menu button is clicked.