Change the width of columns in multiple choice

I want to edit the width of colums in my multiple choice list.  I only want to do it for a specific multiple choice list, I do not want to change all my multiple choice widths throughout my form.

The ID of that field on your form is 250, so you can try adding next CSS to change the width:

#id_250 .form-checkbox-item {
width: 250px;
}

Where 250px; is the new width.

If you need any further assistance, please let us know.

works brilliant! - thank you very much for your help