While working with Joomla when you set your site in offline mode, you might come across a login form. This is quite ok and is a normal Joomla behaviour for offline state. However, you might want to get rid of this form and just show the message that your site is in offline state or down for maintenance.
This is quite possible and is very easy to achieve. But please be aware, that any changes you will be making to this file will revert to its original state upon updating your core Joomla. So each time you update your Joomla, you will have to do these steps one more time in order to retain this time.Add a comment