[Refactor] Add a Back button instead of Home in login/signup

[mohammedanaf]

File Name

login.html, signup.html

Reason for Refactoring the Code

Currently the home button for login and signup page is styled with some basic text and background color which is not looking visually appealing.

I can style it so it suits the background and puts a better impression on users

Checklist

• I have checked the existing issues.
• I have read the Code Of Conduct
• The changes don't break the code
• Please attach the screenshots and video of the development work once it is done

[mohammedanaf]

The pull request has been merged and closed so I will close the issue now.