This is using Bootstrap 4.
HTML data attributes:
data-acc-step - defines the step container. In this case, it's added to bootstrap's .list-group-item elementdata-acc-title - defines the title of the step, only required if you want the plugin to add step numbers for you.data-acc-content - defines the content of the step with the form fields.Optionally, if you set autoButtons: false, you must also use these attributes to control navigation:
data-acc-btn-next - next buttondata-acc-btn-prev - previous button