Selector (CSS)

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In Cascading Style Sheets, a selector is a pattern matching rule that determine which style rules apply to elements in the document tree.

Description

If all conditions in the pattern are true for a certain element, the selector matches the element.

Selectors may range from simple element names to rich contextual patterns.

Case sensitivity

The case-sensitivity of document language element names in selectors depends on the document language.

For example, in HTML, element names are case-insensitive, but in XML they are case-sensitive.

See Case sensitivity.

Fundamental selectors

Complex selectors

See also

External Links