CSS Selectors
A selector is a pattern that matches a set of elements in an HTML or XML document.
The following table summarizes the CSS Selector syntax:
| Pattern | Type | Matches |
|---|---|---|
| * | U | any element |
| E | T | an element of type E |
| E[foo] | A | an E element with a "foo" attribute |
| E[foo="bar"] | A | an E element whose "foo" attribute value is exactly equal to "bar" |
| E[foo~="bar"] | A | an E element whose "foo" attribute value is a list of whitespace-separated values, one of which is exactly equal to "bar" |
| E[foo|="en"] | A | an E element whose "foo" attribute has a hyphen-separated list of values beginning (from the left) with "en" |
| E:first-child | P | an E element, first child of its parent |
| E:link E:visited |
P | an E element being the source anchor of a hyperlink of which the target is not yet visited (:link) or already visited (:visited) |
| E:active E:hover E:focus |
P | an E element during certain user actions |
| E:lang(fr) | P | an element of type E in language "fr" (the document language specifies how language is determined) |
| E::first-line | P | the first formatted line of an E element |
| E::first-letter | P | the first formatted letter of an E element |
| E::before | P | generated content before an E element |
| E::after | P | generated content after an E element |
| E.warning | L | an E element whose class is "warning" (the document language specifies how class is determined). |
| E#myid | I | an E element with ID equal to "myid". |
| E F | D | an F element descendant of an E element |
| E>F | C | an F element child of an E element |
| E + F | S | an F element immediately preceded by an E element |
Type Legend:
A - Attribute
C - Child
I - ID
L - Class
D - Descendant
P - Pseudo-class/element
S - Adjacent Sibling
T - Type
U - Universal