How to remove box around checklist (widget) items?

Trying to remove the grey box / border around the checklist items, what is the correct CSS codes to inject?

Thanks

You can remove the border for the checkist widget by:

1. Edit your form, select the widget, and click the Widget settings
2. Click the CUSTOM CSS tab
3. Insert this code:

.checklist {
   border: 0 !important;
}

4. click the Update widget button.

Do these steps to each of your checklist widget.