Elementor is a page builder plugin that replaces the basic WordPress editor with a live frontend editor, so you can create complex layouts visually, and design your website live, without having to switch between the editor and the preview mode.
Shelly Elementor widgets
There are available custom Elementor widgets of the Shelly theme to help you quickly create a block with specific functionality. Edit with Elementor any page to use the provided elements.
Shelly WordPress widgets
The theme also contains custom WordPress widgets that can be used in the page sidebar or footer. Go Appearance>Widgets to use the Shelly widgets