Feat: Addition of React Toast Alerts for Newsletter | BUGS in UI | BackToTop Button Hover Issue | Footer UI Issue

[Shariq2003]

Describe the feature

1. Addition of React Toast Alerts for Newsletter
2. BUGS in UI | BackToTop Button Hover Issue
3. Footer UI Issue

https://github.com/user-attachments/assets/f4cc6580-688c-4133-a2cb-5aa74064afcb

Add ScreenShots

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Record

• [X] I agree to follow this project's Code of Conduct
• [X] I'm a GSSOC'24 contributor
• [X] I want to work on this issue

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[github-actions[bot]]

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[Shariq2003]

Please increase level