Hi, does anyone know how to change the background colour of an embedded NAC form iframe? We have some rules on the form which makes the form longer or shorter, depending on the answers to previous questions, so need to set the height of the iframe to accommodate this. This results in an unsightly grey box beneath the form. Any idea how to set this to white? Setting background-color="white" doesn’t work.

<script src="https://domainX.workflowcloud.com/embedform/iframe/ntx-embed-iframe.js" data-id="ntxFormContainer-75057f2a-6aef-45e9-a803-4efa3b6f358d"></script><iframe id="ntxFormContainer-75057f2a-6aef-45e9-a803-4efa3b6f358d" scrolling="no" style="width:100%; border:none;" height="2000px" src="https://domainX.workflowcloud.com/embedform/iframe?id=75057f2a-6aef-45e9-a803-4efa3b6f358d"></iframe>