Yes, you are able to export multi-page forms on your landing pages outside ActiveDEMAND.
First we need to create the Webform as an External Webform and in structures click the 'Add Page' button to add our second page. We can proceed to edit the layout and fields as needed.
Then you can export the form to your external website following the instructions in this article
You have the option to export using HTML export or short code, as well as through Wordpress.