Answer for Stylize form builder Oct 27, 2015 / 1 comment / Panda Thuan Hello Mate, Please try to download the extension and update to your site again. We just added the field “Prefix Class” in widget of the form, which allow you input custom css class for form. Share this Post! About the Author : Panda Thuan Panda Thuan Creativity is falling in love with the world