Login Security using Storage

This assignment uses storage to ensure proper authentication
of a user. (This does not use forms)

Create 3 pages with the following functionality:

When page is loaded, check for previous valid authentication. If true, go to Index Page, if False, stay on login page.
User can enter name and password (no input validation needed)
Upon hitting submit, users values are validated against a username and pass stored as constants in your JS file
If Username/Pass are wrong, show error message in the error / generic container
If the user tries to log in 3 times incorrectly, take user to Error Page
If the user comes to the login page and they have already tried 3 times, they should be redirected to the error page.
If Username/Pass are correct, move user to Index Page
The functionality of this page should be achieved using session storage.

External Header
External Footer
External CSS with styles applied
External JS
A header with a generic title of your choice
A welcome message that welcomes the user by the username/name input on the login page

If user is authenticated properly, user is allowed to see page
If user is not authenticated properly or has skipped the login page, user should be taken to the Login Page
with a message in the error generic container stating "You must login first to see that page."

External Header
External Footer
External CSS with styles applied
External JS (if needed)
A header indicating an authentication error
A container with the message "You have tried to log in too many times. Please try again later"