Custom 404 page

[NikhilKottoli]

Description

This is a custom 404 page for corpus

Fixes #54

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• Bug fix (non-breaking change which fixes an issue)
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• Pre-commit hook
• Test B

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[yukitya-1811]

A lot of CSS here. Can you maybe move it to a separate file?

[anirudhprabhakaran3]

This should not be required. Just having the 404 file in the HTML should work.

[anirudhprabhakaran3]

Same as above.

[anirudhprabhakaran3]

Too much custom CSS. Please try to use as much daisyUI, or Tailwind classes.