[Theme: Church] full width metaslider

Hi there,

I’m using a child theme based on [Church] which is already an [Omega] child theme.
I’d like to get a full browser width (and responsive as well) Metaslider on my home page. Just under the navigation menu.
At the moment the slider shortcode is included in the page but I wish I could put some code, somewhere (header.php maybe?) to get it working full width on the hole browser window.

Any idea?
Thx!