Example 404 Page

[devlinjunker]

Is your feature request related to a problem? Please describe:
Provide Example of Custom 404 page and how to configure server to provide with 404 error

Describe the solution:
When the user navigates to a page that doesn't exist, we want to provide a standardized error page that matches our style. Also provide documentation on how to configure server to serve this with 404 errors

Describe alternatives you've considered:
N/A

Links/Additional context:
Examples: https://www.tailwind-kit.com/templates/errors404

Testing:
Should be able to hit /404.html page in local development, on server should default to this page when 404 error occurs