Beware what you post. All forms send data to https://romantic-dirt-jaguar.glitch.me/post. That website is managed by rouslan@ and ignores all data.
This page: https://goo.gl/B6Xs1E
Profile Autofill
Basic form key/value Autocomplete (unstructured data)
Basic form key/value Autocomplete (autocomplete="off")
Credit Card autofill
Updates CVC MaxLength
When the credit card number is changed, a javascript function changes the
maxlength
attribute of the CVC input field from 2 to 4.
Username/Password
autocomplete="off" form
Shipping and Billing sections
IBAN