play = "block";
          userName.innerHTML = user.displayName;
          userEmail.innerHTML = user.email;
        } else {
          signOutButton.style.display = "none";
          message.style.display = "none";

        }
      })

      signInButton.addEventListener("click", userSignIn);
      signOutButton.addEventListener("click", userSignOut);
      
    </script>
    
    <script src="script.js"></script>
  </body>
</html>
