Even though the tailwind docs are great and easily searchable, all the time I ask github copilot to translate legacy css to tailwind classes. Or ask it how to get a certain layout using tailwind classes. (grid, flex ... arg); or tell it what's wrong and ask why it's broken and how do I fix it.
For anyone still wondering why wouldn't I just write css? Because my codebase is littered with orphaned dead css. You can try to use strict naming conventions to connect it to the component it was meant for, but in practice you end with more css, dead css, and you have to read two source code files: component and css.