Course registration form No vaildations issue

Hi

on this course page http://seo-splash.co.il/nitza/courses/%D7%AA%D7%94%D7%9C%D7%99%D7%9A-%D7%A4%D7%AA%D7%99%D7%97%D7%AA-%D7%A9%D7%A4%D7%A2/

when clicking the registration button a form opens up.
even if you dont fill any fields and click submit button there are no validation messages or css

please assist