[Design]: Improve Ui of Login Page

[falak412]

Current Design
It is really plain and boring.

Proposed Design
Adding colours and background according to the theme.

Mockups/Examples
Include any mockups or examples.

Benefits
Explain how this improves the user experience.

Additional Information
Please assign me this issue @VesperAkshay ✨
GSSoC'24 Extd Contributor 🌟

[github-actions]

👋 Thank you for raising an issue! We appreciate your effort in helping us improve. Our team will review it shortly. Stay tuned!

[heyysky]

I would like to work on this

[falak412]

@VesperAkshay please assign me this issue

[bishwa-bandhu-parmar-06]

@VesperAkshay please assign to me i would like to work on it.