WE STRONGLY RECOMMEND NOT MODIFYING THE FUNCTIONALITY OF THIS PLUGIN!
This plugin is released under the GPL license and is open source allowing you to modify the plugin however we strongly recommend against attempting to modify the core functionality of the plugin. The plugin simply acts as an interface to the API service where most of the “under the hood” functionality lives. However some functionality, such as encryption prior to sending the form data to the API, happens within the plugin. Breaking or disabling this encryption process could result in non-encrypted private protected sensitive health information being submitted which would be a HIPAA violation and may lead to both violations of HIPAA and state privacy laws. Any future upgrades of the plugin will not be supported.
While we recommend not modifying the core functionality of the plugin.
Changing the CSS/Styles is totally fine and recommended.
You can also set custom form submission handlers from the HIPAA Forms form settings such as redirecting to another page or to fire a callback Javascript function.