Hello!
I believe CSS won't be enough to move the breadcrumbs widget to the desired position. You will likely need a small custom module that does the job (and moves the widget from one "view list" to another).
Our docs for module developers will be a good start for you:
http://kb.x-cart.com/display/XDD/Developer+docs
Don't hesitate to ask in these forums if you face a question which the tutorials don't answer.
Thanks!