Update Header.jsx

[Amogh1812]

Fixed #43 I have added the necessary tailwind css class for the hovering effect and the active page is now easily recognizable

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🛠️ Pull Request Opened 🛠️ 💖Thanks for the PR| Be sure to star ⭐ the repo !💖

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🎉 Congratulations! 🎉 Your pull request has been approved and is now merged into the project! 🚀 Thank you for your valuable contribution to our open-source community.

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[amanrajrana]

@Amogh1812 I'm Reverting your PR because on small screens, not all nav links are displaying.