CSS3 Pseudo-classes

CSS3 provides many more pseudo-classes than CSS2.

In this Section

1. :nth-child(N)
   matches elements on the basis of their positions within a parent element’s list of child elements
2. :nth-last-child(N)
   matches elements on the basis of their positions within a parent element’s list of child elements
3. :nth-of-type(N)
   matches elements on the basis of their positions within a parent element’s list of child elements of the same type
4. :nth-last-of-type(N)
   matches elements on the basis of their positions within a parent element’s list of child elements of the same type
5. Understanding :nth-child Pseudo-class Expressions
6. :last-child
   matches an element that’s the last child element of its parent element
7. :first-of-type
   matches the first child element of the specified element type
8. :last-of-type
   matches the last child element of the specified element type
9. :only-child
   matches an element if it’s the only child element of its parent
10. :only-of-type
    matches an element that’s the only child element of its type
11. :root
    matches the element that’s the root element of the document
12. :empty
    matches elements that have no children
13. :target
    matches an element that’s the target of a fragment identifier in the document’s URI
14. :enabled
    matches user interface elements that are enabled
15. :disabled
    matches user interface elements that are disabled
16. :checked Pseudo-class
    matches elements like checkboxes or radio buttons that are checked
17. :not(S)
    matches elements that aren’t matched by the specified selector