How to create CSS for CustomPress Post Type

I'm still a beginner when it comes to wordpress development, so bear with me here. I am currently working on mastering your CustomPress plugin for post types. I am quite impressed with how comprehensive this plugin is and can't wait to learn the ins and outs of it. I read through the lengthy usage document about the plugin, which was extremely helpful. Unfortunately, one critical piece of information I was hoping for was bypassed near the end. "Just a few CSS tweaks..."

Am I able to apply CSS to my custom fields individually, or if not, to a post type as a whole? How would I go about doing such a thing if it can be done?

Thank you in advance and I look forward to hearing from you soon!