The editor is the environment in which the user creates and edits the page. The editor consists of several areas:
The editor is the editing screen where the user see the Elementor Panel the live preview.
The panel is the area where user can drag & drop the elements to the page. It has few more settings pages where global settings can be managed.
The final result displayed to the visitors on the frontend, is comprised of PHP rendered markup and a page-specific CSS file generated on the server side.