Breadcrumbs 1.0.1 Plugin - Where is the css held?

I am trying to update the layout of the breadcrumb list that is produced by the Breadcrumbs 1.0.1 pluigin.

The documentation at:
http://wiki.modxcms.com/index.php/Breadcrumbs_1.0.1#CSS
indicates that I need to amend the class definitions .B_crumbBox; .B_currentCrumb etc.

However, I can’t find where the css file containing these class definitions is held within Modx.

Can anyone point me in the right direction?

the text you link to tells you

"You can customize certain elements of the breadcrumb navigation using cascading style sheets or "CSS". This is placed in either the head section of your page, or on an external style sheet."

you do not change it - you add it

whistlemaker, many thanks for your reply - it’s always the simple things that seemed to blind me!.

Thanks to you pointing out the obvious, my breadcrumbs are now finally sorted