#CSS `:has()` feature detection with `@supports(selector(…))`: You want `:has(+ *)`, not `:has(*)`

> If you’re feature detecting `:has()` with `@supports` you must pass a selector into `:has()`. This can be `*` but if your code uses relative selectors inside `:has()`, use `@supports selector(:has(+ *))` instead. This must be done to filter out Firefox visitors who have flipped on the experimental `:has()` support, which currently lacks support for relative selectors.

🔗 https://brm.us/at-supports-has