Fix: center button text in primary button

[Ayeshaxsa]

🔖 PR Title: Fix: Center alignment of button text on homepage

📄 Description:

This PR fixes a minor UI inconsistency where button text such as "Open", "Play Now", and "View Syllabus" appeared slightly left-aligned on the homepage. The text is now properly centered to improve overall visual balance and consistency.

🧑‍💻 What changes were made?

• Added text-align: center; to the .primary-button class in index.css

📚 Documentation Updated?

-No

🖼️ Screenshot or Screen Recording (max 15 seconds)

📸 Attach screenshot or screen recording showing the updated section (mandatory for all changes).

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💡 Tech Stack Used:

• HTML / CSS / JavaScript

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List of File Changed :

no. of file changed :

1 - index.css

🔗 Issue Reference:

Closes #360 UI Enhancement: Center-align button text for better visual consistency

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🧩 Contribution Type:

• Frontend 🎯

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🙏 Additional Info (if any):

This is my first open source contribution 😊.
I’ve tried to follow the contribution guidelines, but I’m open to any suggestions or corrections if something needs improvement..

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[github-actions]

👋 Hi @Ayeshaxsa, thank you for opening this Pull Request!
🔧 Please ensure the following:

• ✅ Resolve any merge conflicts, if they exist.make sure you have updated your local repo to avoid conflicts. and solve in your local repo. do not solve in github editor.try to solve in your local repo in vs code or any other editor.
• 🧾 Clearly mention the issue number you are solving (e.g., Fixes #issue_number).
• 📎 Please update your PR description if anything is unclear or incorrect.
• 📷 Attach a screenshot or screen recording of your fix.
• 💬 Kindly share the PR link in the Discord server manually for better tracking.
• if follow the guidelines and fit to project then label according to pr otherwise close the pr.

Happy Contributing! 🚀

[VAIBHAVBABELE]

NOT consider for point