[Feat]: The website doesn't have a dark theme

[SUJAY-HK]

Is there an existing issue for this?

• I have searched the existing issues

Feature Description

Theme is not changing when clicked on change theme.

Use Case

Having a dark theme in today's websites is mandatory.

Benefits

No response

Priority

High

Agreements

• I agree to follow this project's Code of Conduct
• I'm a GSSoC contributor
• I'm a Hacktoberfest contributor
• I want to work on this issue
• I'm willing to provide further clarification or assistance if needed.

[github-actions]

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