Hi bmfirst,
Thanks for reaching to us.
1. This demo using Custom WooCommerce Builder layouts, which is part of WooCommerce builder from WoodMart.
Please refer to below documentation article to understand how to edit / remove content:
https://xtemos.com/docs-topic/woodmart-woocommerce-layout-builder/
https://xtemos.com/docs-topic/single-product-page-builder/
2. You can create a dev site and import any template there, then with the help of the import functionality of Elementor you can export HTML Blocks, more detail is here: https://elementor.com/help/template-library/
Devsite – also called a Staging platform where you can test issues, enable/disable features/plugins thus such changes will affect the main site. The below article will help you to create it:
https://www.wpbeginner.com/wp-tutorials/how-to-create-staging-environment-for-a-wordpress-site/
Regards,
.
