Navbar: Fix Dark Mode Toggle Button Placement and Responsiveness

Hey!!!!
I've noticed a bug in the navbar section!
The current implementation of the navbar on your website has a couple of issues that need to be addressed. Firstly, the dark mode toggle button, specifically the light mode/dark mode switch, is not properly placed within the navbar. It seems to be misaligned or overlapping with other elements, making it difficult to toggle between the light and dark modes.

Secondly, the responsiveness of the navbar needs improvement. When viewing the website on different screen sizes or devices, the navbar elements are not adapting well. They may get cut off, overlap with other content, or become difficult to interact with. This hinders the user experience and usability of the website.