gift_voucher
The gift_voucher.twig view hosts the gift-voucher page of the theme.
The page is only used/active when the gift card app is active.
Gift voucher form
The view hosts the gift voucher form.
The styles object can be used to display the available 'card style' options, i.e.
{% for style in styles %}
<input type="radio" name="type" value="{{ style.id }}>
{{ style.name }}
{% endfor %}