Full Width Map

I don’t know if this is a limitation of the map plugin or the theme. I know enough about WordPress to be dangerous ??

At the bottom of the page I would like to have a full width map. I’ve tried shortcode on its own, and placing it inside a cover set to ‘full width’ but the maps stays the same size.
I’ve tried using custom CSS but the best I’ve been able to pull off is to move the map from side to side by playing with the margins, again the map doesn’t get any wider.

This isn’t a huge deal, it’s just more in line with the original design.

Is it possible to change the width of the map?

Thanks

The page I need help with: [log in to see the link]