Navbar UI Improvement for Better Responsiveness

[khuushiie]

The current navbar is oversized and lacks responsiveness, impacting both the visual appeal and user experience of the website. To improve this, I suggest making the navbar more compact and applying a transparent light-green color scheme to modernize its appearance. Additionally, the navbar should be optimized for various screen sizes, including adding a hamburger menu for mobile devices to ensure smooth navigation. These changes will enhance the aesthetics and functionality of the navbar, creating a more user-friendly experience. I'm happy to work on this if assigned.

[github-actions]

Hello @khuushiie! Your issue #133 has been closed. Thank you for your contribution!