Pseudo-Class ↔ Simple Selector : postfix to match special state of selected element(s)

:indeterminate

Linguistic Pseudo-Class

Location Pseudo-Class

User Action Pseudo-Class

Time-Dimentional Pseudo-Class

Resource State Pseudo-Class

Input Pseudo-Class

DOM-Tree Pseudo-Class

References

1. :active ↔ Pseudo-Class to match Element activate by user

2. :hover ↔ Pseudo-Class to match Element when user pointer over Element

3. :root ↔ Pseudo-Class to match root element of DOM Tree

4. :focus ↔ Pseudo-Class to match when Element has focus

5. :focus-visible ↔ Pseudo-Class to match when Element has focus & apply (default) focus-ring to highlight element