Web/CSS/counter-increment

The counter-increment CSS property increases or decreases the value of a CSS counter by a given value.

The source for this interactive example is stored in a GitHub repository. If you'd like to contribute to the interactive examples project, please clone https://github.com/mdn/interactive-examples and send us a pull request.

Note: The counter's value can be reset to an arbitrary number using the counter-reset CSS property.

Syntax

/* Increment "my-counter" by 1 */
counter-increment: my-counter;

/* Decrement "my-counter" by 1 */
counter-increment: my-counter -1;

/* Increment "counter1" by 1, and decrement "counter2" by 4 */
counter-increment: counter1 counter2 -4;

/* Do not increment/decrement anything: used to override less specific rules */
counter-increment: none;

/* Global values */
counter-increment: inherit;
counter-increment: initial;
counter-increment: unset;

The counter-increment property is specified as either one of the following:

A <custom-ident> naming the counter, followed optionally by an <integer>. You may specify as many counters to increment as you want, with each name or name-number pair separated by a space.
The keyword value none.

Values

<custom-ident>: The name of the counter to increment.
<integer>: The value to add to the counter. Defaults to 1 if not specified.
none: No counter must be incremented. This is used as the default value, or to cancel an increment in more specific rules.

Formal definition

Initial value	`none`
Applies to	all elements
Inherited	no
Computed value	as specified
Animation type	discrete

Formal syntax

[ <custom-ident> <integer>? ]+ | none

Examples

Incrementing named counters

h1 {
  counter-increment: chapter section 2 page;
  /* Increases the value of the chapter and page counters by 1,
     and the section counter by 2 */
}

Specifications

Specification	Status	Comment
CSS Lists Module Level 3The definition of 'counter-increment' in that specification.	Working Draft	No change.
CSS Level 2 (Revision 1)The definition of 'counter-increment' in that specification.	Recommendation	Initial definition.

Browser compatibility

Update compatibility data on GitHub

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`counter-increment`	Chrome Full support 2	Edge Full support 12	Firefox Full support 1	IE Full support 8	Opera Full support 9.2	Safari Full support 3	WebView Android Full support ≤37	Chrome Android Full support 18	Firefox Android Full support 25	Opera Android Full support 10.1	Safari iOS Full support 1	Samsung Internet Android Full support 1.0

Legend

Full support: Full support