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css selectors

Child selector selects only one level down the markup structure, no deeper.

ul li { margin: 0 0 5px 0; } /* selects all li elements inside ul */
ul > li { margin: 0 0 5px 0; } /* selects only first level li elements */

Adjacent sibling selector selects only elements that immediately follow first element.

div + p { color: red; } /* selects all paragraphs that immediately follow div element */

General sibling selector selects all elements that follow (doesn't need immediately succeed) the first element.

div ~ p { font-weight: bold; } /* selects all paragraphs that follow div element */

w3 css3 selectors

Browser support (supported by: chrome, opera, firefox, ie9)

Pattern Meaning Described in section
* any element Universal selector
E an element of type E Type selector
E[foo] an E element with a "foo" attribute Attribute
selectors
E[foo="bar"] an E element whose "foo" attribute value is exactly equal to "bar" Attribute
selectors
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"
Attribute
selectors
E[foo^="bar"] an E element whose "foo" attribute value begins
exactly with the string "bar"
Attribute
selectors
E[foo$="bar"] an E element whose "foo" attribute value ends exactly with the string "bar" Attribute
selectors
E[foo*="bar"] an E element whose "foo" attribute value contains the substring "bar" Attribute
selectors
E[foo|="en"] an E element whose "foo" attribute has a
hyphen-separated list of values beginning (from the left) with "en"
Attribute
selectors
E:root an E element, root of the document Structural
pseudo-classes
E:nth-child(n) an E element, the n-th child of its parent Structural
pseudo-classes
E:nth-last-child(n) an E element, the n-th child of its parent, counting
from the last one
Structural
pseudo-classes
E:nth-of-type(n) an E element, the n-th sibling of its type Structural
pseudo-classes
E:nth-last-of-type(n) an E element, the n-th sibling of its type, counting
from the last one
Structural
pseudo-classes
E:first-child an E element, first child of its parent Structural
pseudo-classes
E:last-child an E element, last child of its parent Structural
pseudo-classes
E:first-of-type an E element, first sibling of its type Structural
pseudo-classes
E:last-of-type an E element, last sibling of its type Structural
pseudo-classes
E:only-child an E element, only child of its parent Structural
pseudo-classes
E:only-of-type an E element, only sibling of its type Structural
pseudo-classes
E:empty an E element that has no children (including text
nodes)
Structural
pseudo-classes
E:link

E:visited

an E element being the source anchor of a hyperlink of which the target is not yet visited (:link) or already visited (:visited) The link pseudo-classes
E:active

E:hover

E:focus

an E element during certain user actions The user action
pseudo-classes
E:target an E element being the target of the referring URI The target pseudo-class
E:lang(fr) an element of type E in language "fr" (the document
language specifies how language is determined)
The :lang() pseudo-class
E:enabled

E:disabled

a user interface element E which is enabled or
disabled
The UI element states
pseudo-classes
E:checked a user interface element E which is checked (for instance a radio-button or checkbox) The UI element states
pseudo-classes
E::first-line the first formatted line of an E element The ::first-line
pseudo-element
E::first-letter the first formatted letter of an E element The ::first-letter
pseudo-element
E::before generated content before an E element The ::before
pseudo-element
E::after generated content after an E element The ::after
pseudo-element
E.warning an E element whose class is "warning" (the document
language specifies how class is determined).
Class selectors
E#myid an E element with ID equal to "myid". ID selectors
E:not(s) an E element that does not match simple selector s Negation pseudo-class
E F an F element descendant of an E element Descendant
combinator
E > F an F element child of an E element Child combinator
E + F an F element immediately preceded by an E element Adjacent
sibling combinator
E ~ F an F element preceded by an E element General
sibling combinator

Examples of the selectors with "nth" argument:

  • :nth-child(even);
  • :nth-child(odd);
  • :nth-child(3n) - 3,6,9;
  • :nth-child(3n-1) - 2,5,8

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