Digital Pro is a child theme of Genesis framework released by StudioPress, so you’ll need to have the Genesis framework installed before installing the theme.
A child theme inherits all functions from its parent theme. Using a child theme on your site is highly recommended because it makes sure that no customization is lost when you’re updating the parent theme. You can read more about why you need a child theme.
Genesis framework functions as the foundation of your site and powers over 500,000 WordPress sites already. It ships with WordPress SEO settings and is a lightweight theme.