Make and implement a custom 404 Error page #152

[Vaibhavsahu2810]

Overview This PR fixes or fixes part of #152 This PR does the following: Created a error 404 page to resolve the issue #152

Proof that changes are correct

https://github.com/BitByte-TPC/alumni/assets/154520239/9f7d9f74-71e3-4e07-bce4-720f6dee8e7a

This screen recording shows that when the user try to visit any undefined route they see an custom error 404 page. Thank you.

Fixes #152

[SamakshAgarwal1112]

@Vaibhavsahu2810 Try to improve responsive a bit more.

[Vaibhavsahu2810]

@SamakshAgarwal1112 successfully implemented all the changes that you want. Thank you

[SamakshAgarwal1112]

@Vaibhavsahu2810 The 404 heading is floating to the right on larger screens. Try to keep it in the middle.

[Vaibhavsahu2810]

@SamakshAgarwal1112 successfully improved the responsiveness for larger screens Thank you