Custom Offline Page

To accomplish this, you will want to follow these steps:

1. Navigate to Administrator → Extensions → Templates Manager and select the template you are currently using as your default.

   

2. Navigate to the Offline / Coming soon page tab.

3. If you want to use countdown select Show date = Yes.

4. Add the correct Year, Month and Date

5. On Content Text field write the info you want.

6. Click Save button

Go in System -  Global Configuration. In site settings select Site Offline = yes and click save button.

Your site will look like the image below