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Pseudo-elements

A CSS pseudo-element is a keyword added to a selector that lets you style a specific part of the selected element(s). For example, ::first-line can be used to change the font of the first line of a paragraph.

/* The first line of every <p> element. */
p::first-line {
  color: blue;
  text-transform: uppercase;
}

Note: In contrast to pseudo-elements, pseudo-classes can be used to style an element based on its state.

Syntax

selector::pseudo-element {
  property: value;
}

You can use only one pseudo-element in a selector. It must appear after the simple selectors in the statement.

Note: As a rule, double colons (::) should be used instead of a single colon (:). This distinguishes pseudo-classes from pseudo-elements. However, since this distinction was not present in older versions of the W3C spec, most browsers support both syntaxes for the original pseudo-elements.

Alphabetical index

Pseudo-elements defined by a set of CSS specifications include the following:

A

B

C

F

G

M

P

S

T

Specifications

Specification
Cascading Style Sheets Level 2 Revision 2 (CSS 2.2) Specification
# pseudo-element-selectors

Browser compatibility

See also

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https://developer.mozilla.org/en-US/docs/Web/CSS/Pseudo-elements