Added smooth hero section animation

[Janhavi078]

Pull Request Template

📝 Description

• Added a smooth fade-in and slide-up animation to the landing page hero section.
• This improves the user experience by making the page feel more dynamic and professional.
• No other components were affected.

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🔗 Related Issue

Closes #38

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📸 Screenshots / GIFs

Before & After GIF or screenshot:

• Before: Hero section appears instantly
• After: Hero section fades in and slides up smoothly add little particles in aniamtion

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✅ Checklist

• I have tested my changes locally on npm run dev
• I have followed the project’s coding style (linted my code)
• This PR is ready for review

💡 Notes for Reviewers (Optional)

• Focus on the hero section animation and responsiveness across different screen sizes.

Review

• Please request a review from @Rizwan102003 or @arushi2610 before merging.