Divi is a popular WordPress theme and page builder plugin developed by Elegant Themes. Like other page builder plugins, Divi allows you to create professional-looking websites without having to know any code. It includes a drag-and-drop editor that allows users to customise the layout and design of their website by adding and arranging widgets on the page.

Some of the functions of Divi are:

A live drag-and-drop editor that lets you see your changes in real time
A large selection of ready-made templates and themes
The ability to customise the look of your website with fonts, colours and other design elements
Responsive design so your website looks good on any device
SEO tools to help your website rank better in search engines
Divi is a popular choice for creating websites because it is easy to use and offers a lot of flexibility and customisation options. It is also very customisable and offers options for custom CSS and the ability to create your own modules and templates.