Thank you very much podz, your code worked out fine.
And I tested the PHP driven one, but it wasn’t clickable. So I will use the code that worked, but thank you for trying gornik321. However, another problem arose. Clicking on either button creates this error:
Not Found
The requested URL /wp-login.php was not found on this server.
Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request.
