I recently started using Tailwind and really enjoy how fast it makes building new UIs. However, I wonder how we'll view this in the future, when people have to actually go back into older projects using Tailwind and look at the jungle of classnames.

At some point there can be so many classnames on different elements that you basically arrive back at the original problem of complex stylesheets where you don't know what is affecting what.

Combine that with the fact that you need to have good knowledge to which CSS styles each classname refers, and I can see a lot of headaches down the line when someone has to fix the styles on a complex component.