Update index.css

[SreejaVeerappan]

Description

Please provide a brief description of the changes introduced by this pull request.

Related Issues*

• Fixes #(issue number)

Screenshots! (Optional)

Before changes:
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After changes:
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Checklist

Replace "[ ]" with "[x]" to mark them as completed.

• I have forked the repo and pushed the changes according to contribution guidelines.
• I have tested these changes locally.
• I have tried to maintain the consistency of the code.
• I have tested these changes locally.
• I have updated the documentation accordingly.

[vercel]

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