Some code for a Sign in page you can use. Selecting "Continue as guest" Will make the sprites dissapear. Feel free to change that. Selecting "Sign in" Will ask you to enter your password. Entering the correct password will grant you access if you code it to do something after. Not typing it correctly will result in a password reset.
If you wish to use this junk, just give some credit and boom, it is yours. Feel free to add extra bits of code to make it yours and changing the sprites costumes will not do anything. Understanding can take some time.
