What did you need Tailwind for before that you couldn't do in normal CSS? Doesn't Tailwind map pretty much 1:1 to CSS?
Much of it does, but not all of it.
The original question wasn't whether Tailwind can do something CSS can't, but whether it was a 1:1 mapping.
Can regular CSS do media queries all within the element's style attribute?
I believe Tailwind also utilizes JS to get some convenience features to work.
I want to say that tailwind also can't do inline media queries, but that's getting really nitpicky and pedantic. You can at least add a class inline that Tailwind creates a media query for in CSS, that is really handy.