Please tell me how to implement jQuery validation in the webform module.

Hello! Could you please tell me how to properly attach jQuery validation to a webform module of this type? There is an example of validation on the jQuery site (http://www.runningcoder.org/jqueryvalidation/demo/ with markup similar to the signin v3 example). I can't seem to find where to edit the specific output of fields in the webform module (for instance, I need to change the output for the email field, name, textarea), and add my own additional markup to integrate the validation. I wanted to know if it's possible to customize input fields in the webform like this? Or is there another way to connect field validation?