How does the views page style options work?
It is a CSS question, not Drupal.

I understand that using the Open Outreach theme you probably run a non-profit organization of some kind, so I'll try to help you.

You already said that you don't want to learn HTML/CSS in other questions so I will try to be straightforward: you can't.

What you might do is change from Unformatted List to HTML List and hope that the basic CSS don't change it. And yes, the preview will be different from the final view because templates. The closed admin part uses a template different than the open part.