Fix #253: Navbar double underline hover issue

[mandeep6207]

🚀 Summary

This PR resolves the navbar hover underline issue (#253).

🔧 Changes Made

• Removed duplicate underline CSS effect
• Improved hover animation consistency
• Ensured responsive navbar behavior

[vercel]

@mandeep6207 is attempting to deploy a commit to the Karan Manickam's projects Team on Vercel.

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[github-actions]

🎉 Thanks for the PR, @mandeep6207!

We really appreciate you taking the time to contribute to CryptoHub! 💙

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✅ PR Checklist

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• Your code follows the project's coding standards
• All file changes are accurate and intentional
• You've tested your changes locally
• Any review comments have been addressed

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[github-actions]

👋 Hi @mandeep6207,
This pull request does not seem to be linked to an issue.

Please link an issue using one of the following formats:

• Fixes Update footer icons and layout #123
• Closes Update footer icons and layout #123
• Resolves Update footer icons and layout #123

Linking issues helps us track work and close issues automatically. Thanks! 🙌

[github-actions]

👋 Hi @mandeep6207,
This pull request does not seem to be linked to an issue.

Please link an issue using one of the following formats:

• Fixes Update footer icons and layout #123
• Closes Update footer icons and layout #123
• Resolves Update footer icons and layout #123

Linking issues helps us track work and close issues automatically. Thanks! 🙌