Your site uses a plugin called Divi Builder that allows you to easily make content and layout changes. Divi maintains its own documentation that we recommend reviewing here.
To use Divi Builder to edit a page:
From the WordPress Administrator Interface, click Pages on the left navigation menu. You’ll see a list of every page on your site, organized by folder structure.
Click the page title to begin editing it. When the screen refreshes, you can choose Divi Builder view, which looks like the screenshot here, or Default Editor which will allow you to select Text and view the HTML.
