| selector | should match (green) | should NOT match |
|---|---|---|
| :any-link | href link | anchor, no href |
| :scope | — matches <html> only — | a span is not the root |
| :default | checked-by-markup | unchecked |
| :indeterminate | ||
| :placeholder-shown | ||
| :required | ||
| :optional | ||
| :read-only | and every plain element | — |
| :read-write | plain span | |
| :valid | ||
| :invalid | ||
| :in-range | ||
| :out-of-range | ||
| :open | open detailsbody |
closed detailsbody |
| :dir(rtl) | dir=rtl inherited | no dir dir=ltr |