How do I shorten a configurable list?

I am attempting to create a group registration form with the configurable list widget, but it is too large for the margins. I was wondering if there was a way to have it stay within the margins?

Thank you!

You may consider doing the widget this way: https://form.jotform.com/91616892889983. 

Guide: https://www.jotform.com/help/456-How-to-Make-the-Configurable-List-Widget-Mobile-Responsive.

Note that after adding the custom CSS codes in both widget and the form, Unshrink the whole widget: