feat: Improve Navbar Visibility and Add Dropdown Menu

[lovelymahor]

Improve Navbar Visibility and Add Dropdown Menu and Issue No. : #1129

Title : Improve Navbar Visibility

Issue No. : #1129

Code Stack :

Close #1129

Description

• Enhanced navbar visibility with better readability and contrast.
• Added a dropdown menu for better organization.

Video/Screenshots (mandatory)

Before

After

Type of PR

• Bug fix
• Feature enhancement
• Documentation update
• Other (specify): _______________

Checklist:

• I have performed a self-review of my code.
• I have commented my code, particularly in hard-to-understand areas.
• I have tested the changes thoroughly before submitting this pull request.
• I have provided relevant issue numbers, screenshots, and videos after making the changes.
• I have gone through the contributing.md file before contributing

Additional context:

##Are you contributing under any Open-source programme?
Yes, GSSOC'24

• I am contributing under GSSOC'24
• I am contributing under VSOC'24

[netlify]

✅ Deploy Preview for taupe-cendol-f7e2bb ready!

Name	Link
🔨 Latest commit	e2a2c4e
🔍 Latest deploy log	https://app.netlify.com/sites/taupe-cendol-f7e2bb/deploys/66a4bfe22d9cc900086fca09
😎 Deploy Preview	https://deploy-preview-1244--taupe-cendol-f7e2bb.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify site configuration.

[github-actions]

Hi @lovelymahor! Thank you for your valuable contribution! Our team will review it and get back to you soon.

[lovelymahor]

Hello @apu52,
Please review the changes at your earliest convenience and consider merging them. Thank you!

[apu52]

@lovelymahor good work