Let me give an example of my problem: I'm working with magento (just explaining) and i want to make a full-width banner. Perhaps, Magento by default place a
class="container"
div that limit the width for the custom grid they have. So, i don't know what to do to get the full-width banner when it's placed (forced by Magento structure) inside a div with max-width setting.
In fact, i did some "margin" and "padding" configuration, but i'm trying to avoid this exaustive path just for one banner.
Here is my example: https://jsfiddle.net/mq4sr8d8/1/
<div class="background-size"><div class="outside"><div class="inside"></div></div></div>