Hi 5uwebsite
By default, in the layout of JA Morgan template, the main body has class called 'container' which is set with a fixed width. In order to show it fully, you will need to customize main body block and layout of template.
I assume that you're using a home layout for current page, you can download attached file >> unzip and copy associated PHP files inside to associated folder:
ROOT/templates/ja_morgan/tpls/home-full.php
ROOT/templates/ja_morgan/tpls/blocks/mainbody-fullwidth.php
