Creating a form using Bootstrap 4 as base for CSS and JS, with jQuery Validation

We have a page set up with the layout and elements required, we just need a developer to link the form fields to the required values. We have been provided with the 3 'forms' Purchase Form fields, Balance Check Form Fields and Balance Check result.

Wordpress Website with Enfold Theme - all latest updates.
https://normanhotel.com.au/gift-card/

This website has the same functionality required
https://www.strikebowling.com.au/gift-card/buy-now