[ENHANCEMENT STYLING] Add Navbar Background for Better Visibility

[lovelymahor]

Description

We need to add a background color to the navbar to improve visibility and ensure that the navigation links are easily readable.

Actual Behavior

The current navbar does not have a background color, making the navigation links less visible, especially against certain backgrounds.

Expected Behavior

The navbar has a background color that enhances visibility and readability of the navigation links.

Steps to Reproduce (if applicable)

Visit the website.
Observe the navbar without a background color.
Notice the reduced visibility of the navigation links.

Screenshots (if applicable)

Actual:

Expected (highlight the part that requires changes):
(screenshot)

[lovelymahor]

@itsmohit097 I want to work on this issue. Also, please add the label GSSOC and the level that you find appropriate for this issue. thank you!

[ANGIRAVO]

i want to work on this issue.please add the label GSSOC