Removed whitespace from footer

[AzimWarsii]

What is the change?

Margin Top of Footer was reduced to 0 rem , hence removing the whitespace above the footer

Related issue?

closes: #371

How was it tested?

I deployed the webpage locally on my system to test the results of the changes made.

Checklist:

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• [x] Have you followed the Contribution Guidelineswhile contributing.
• [x] Have you checked there aren't other open Pull Requests for the same update/change?
• [x] Have you made corresponding changes to the documentation?
• [x] Have you tested the code before submission?
• [x] Have you formatted your code ? (You can use any html,css beautifier)
• [x] My changes generates no new warnings.
• [x] I'm Diversion2k23 contributor.
• [x] I have commented my code, particularly in hard-to-understand areas.

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