Updated faq.css

[Amruta7203]

resolves #705

Description

Improved the css of dropdown arrow in the FAQ section

Type of PR

• Bug fix
• [x ] Feature enhancement
• Documentation update
• Other (specify): _______________

Screenshots / videos (if applicable)

[Attach any relevant screenshots or videos demonstrating the changes]

Checklist:

• [ x] I have performed a self-review of my code
• [ x] I have read and followed the Contribution Guidelines.
• [ x] I have tested the changes thoroughly before submitting this pull request.
• [ x] I have provided relevant issue numbers, screenshots, and videos after making the changes.
• [ x] I have commented my code, particularly in hard-to-understand areas.

Additional context:

[Include any additional information or context that might be helpful for reviewers.]

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[arghadipmanna101]

In your PR, There have some issue check it once .

[Amruta7203]

@arghadipmanna101 The issue is resolved. Pls add relevant gssoc labels and merge this PR. Thank you.

[arghadipmanna101]

Issue 👍