Configurable List: Can I remove the plus sign?

I am trying to use the configurable widget and I think I have it the way I want. However, I would like to remove the plus sign so that the people using it can't add any additional fields. Is there a way to hide the plus sign?

Simply add this code to the custom CSS to each of your Configurable List widgets:

.add{

  display:none;

}

Let us know if you have more questions.