fix: Navbar section updated for mobile view

[AbhiDiva96]

Related Issue

fixes: #305

Description

Improved/enhanced the navbar section for the mobile view

Screenshots

Before change

After change

Added theme button so that user can easily shift from dark to light mode or vice-versa

Summary by CodeRabbit

Summary by CodeRabbit

• Improvements
  • Enhanced the layout and styling of the Navbar for a better visual presentation and user experience on both desktop and mobile views.
  • Minor formatting adjustments to the Theme Button for code consistency.