So, I haven't been able to track down this specifically for customizr:
How can I create a custom-template.php that gives me a 100% screen width for my content area?
This would be useful on pages such as this:
...where I have parallax sections and would like them to span across the entire screen width.
I found this: http://premium.wpmudev.org/blog/create-a-full-width-page-for-wordpress-in-5-simple-steps/
... but don't know if it is the direction to go?