CSS

====Summary of selector syntax====
The following table provides a summary of selector syntax indicating usage and the version of CSS that introduced it.<ref>{{cite web |url=https://www.w3.org/TR/selectors/ |title=Selectors Level 3 |publisher=W3C |access-date=2014-05-30 |archive-url=https://web.archive.org/web/20140603165900/https://www.w3.org/TR/selectors/ |archive-date=2014-06-03 |url-status=live }}</ref>
{| class="wikitable"
|-
! Pattern !! Matches !! First defined<br/>in CSS level
|-
| {{code|2=css|1=E}} || an element of type E || 1
|-
| {{code|2=css|1=E:link}} || an E element that is the source anchor of a hyperlink whose target is either not yet visited (:link) or already visited (:visited)  || 1
|-
| {{code|2=css|1=E:active}} || an E element during certain user actions || 1
|-
| {{code|2=css|1=E::first-line}} || the first formatted line of an E element || 1
|-
| {{code|2=css|1=E::first-letter}} || the first formatted letter of an E element || 1
|-
| {{code|2=css|1=.c}} || all elements with class="c" || 1
|-
| {{code|2=css|1=#myid}} || the element with id="myid" || 1
|-
| {{code|2=css|1=E.warning}} || an E element whose class is "warning" (the document language specifies how class is determined) || 1
|-
| {{code|2=css|1=E#myid}} || an E element with ID equal to "myid" || 1
|-
| {{code|2=css|1=.c#myid}} || the element with class="c" and ID equal to "myid" || 1
|-
| {{code|2=css|1=E F}} || an F element descendant of an E element || 1
|-
| {{code|2=css|1=*}} || any element || 2
|-
| {{code|2=css|1=E[foo]}} || an E element with a "foo" attribute || 2
|-
| {{code|2=css|1=E[foo="bar"]}} || an E element whose "foo" attribute value is exactly equal to "bar" || 2
|-
| {{code|2=css|1=E[foo~="bar"]}} || an E element whose "foo" attribute value is a list of whitespace-separated values, one of which is exactly equal to "bar" || 2
|-
| {{code|2=css|1=E<nowiki>[foo|="en"]</nowiki>}} || an E element whose "foo" attribute has a hyphen-separated list of values beginning (from the left) with "en" || 2
|-
| {{code|2=css|1=E:first-child}} || an E element, first child of its parent || 2
|-
| {{code|2=css|1=E:lang(fr)}} || an element of type E in language "fr" (the document language specifies how language is determined) || 2
|-
| {{code|2=css|1=E::before}} || generated content before an E element's content || 2
|-
| {{code|2=css|1=E::after}} || generated content after an E element's content || 2
|-
| {{code|2=css|1=E > F}} || an F element child of an E element || 2
|-
| {{code|2=css|1=E + F}} || an F element immediately preceded by an E element || 2
|-
| {{code|2=css|1=E[foo^="bar"]}} || an E element whose "foo" attribute value begins exactly with the string "bar" || 3
|-
| {{code|2=css|1=E[foo$="bar"]}} || an E element whose "foo" attribute value ends exactly with the string "bar" || 3
|-
| {{code|2=css|1=E[foo*="bar"]}} || an E element whose "foo" attribute value contains the substring "bar" || 3
|-
| {{code|2=css|1=E:root}} || an E element, root of the document || 3
|-
| {{code|2=css|1=E:nth-child(n)}} || an E element, the n-th child of its parent || 3
|-
| {{code|2=css|1=E:nth-last-child(n)}} || an E element, the n-th child of its parent, counting from the last one || 3
|-
| {{code|2=css|1=E:nth-of-type(n)}} || an E element, the n-th sibling of its type || 3
|-
| {{code|2=css|1=E:nth-last-of-type(n)}} || an E element, the n-th sibling of its type, counting from the last one || 3
|-
| {{code|2=css|1=E:last-child}} || an E element, last child of its parent || 3
|-
| {{code|2=css|1=E:first-of-type}} || an E element, first sibling of its type || 3
|-
| {{code|2=css|1=E:last-of-type}} || an E element, last sibling of its type || 3
|-
| {{code|2=css|1=E:only-child}} || an E element, only child of its parent || 3
|-
| {{code|2=css|1=E:only-of-type}} || an E element, only sibling of its type || 3
|-
| {{code|2=css|1=E:empty}} || an E element that has no children (including text nodes) || 3
|-
| {{code|2=css|1=E:target}} || an E element being the target of the referring URI || 3
|-
| {{code|2=css|1=E:enabled}} || a user interface element E that is enabled || 3
|-
| {{code|2=css|1=E:disabled}} || a user interface element E that is disabled || 3
|-
| {{code|2=css|1=E:checked}} || a user interface element E that is checked (for instance a radio button or checkbox) || 3
|-
| {{code|2=css|1=E:not(s)}} || an E element that does not match simple selector s || 3
|-
| {{code|2=css|1=E ~ F}} || an F element preceded by an E element || 3
|}