This VQMOD does only one thing - it changes all divs Opencarts with the "container" class in the default template to having the "container-fluid" class instead.

Reason being - there are many Themes which use "container-fluid", but which don't supply changes to all of Opencarts template files - so if you end up at a page which the theme developer didn't create a new .TPL file for, you end up with a non fluid container. This fixes that.