[Plugin: Register Plus Redux] CSS

I’m not sure what you are asking, but, if you want to know like, the id and classes of the fields used by Redux, you can view the HTML of your registration page. For example, if you are including the “First Name” field, the <p> containing the field is called first_name-p, and the <label> around the <input> is called first_name-label, and finally the input field that users enter data into is just first_name, these are all unique ids and all the other fields follow suit.