How to Change Images on Prestashop Maintenance Page

How to change image (with green bag and red hand) of maintenance page.
Do you have tired to edit maintenance.tpl with no success. maintenance.tpl has code for logo and favicon but could not find code to change the image.

How to change images on prestashop maintenance page? Here is the solutions.

Change maintenance.css

hope this will help someone if future. Hope is a good thing.