Internally, we call it Plain Classes.
This feature is tied to each visual builder integration and must be enabled manually for every builder. Even in Gutenberg, it’s disabled by default.
You can access it by opening the Settings tab.

Class names logic
Plain Classes is a tool designed to help you speed up adding and typing class names. It’s generated based on your configuration or the Style tab in Winden 4, as well as your Wizard settings.
It supports fuzzy search, so typing ‘red’ will suggest options like text-red-*, bg-red-*, border-red-*, and more.
Split Screens.
View classes per breakpoints
Plain Classes autocomplete also supports breakpoint splitting, allowing you to focus only on the breakpoints you need. This keeps your inputs shorter.
Drag between breakpoints
You can also hold the CTRL key and drag classes between breakpoints, so you don’t need to manually type the breakpoint prefixes.