fix: To fix border of "CONTACT US" image section in Dark Mode

[parkhibhandula]

Title and Issue number

Title : To fix border of "CONTACT US" image section in Dark Mode

Issue No. : #615

Code Stack : CSS

Close #615

Description

I have fixed the issue of border in "CONTACT US" image section in Dark Mode

Video/Screenshots (mandatory)

Type of PR - BUG FIX

Checklist:

• I have performed a self-review of my code.
• I have commented my code, particularly in hard-to-understand areas.
• I have tested the changes thoroughly before submitting this pull request.
• I have provided relevant issue numbers, screenshots, and videos after making the changes.
• I have gone through the contributing.md file before contributing

Additional context:

##Are you contributing under any Open-source program?
Yes, I am contributing under GSSOC 2024.

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[parkhibhandula]

Hii @apu52 I have made a new pull request #802 please check it out if there is any issue.

[apu52]

@parkhibhandula okkk