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counter-increment

The counter-increment CSS property increases or decreases the value of a CSS counter by a given amount. The counter's value can be reset to an arbitrary number using the counter-reset CSS property.

/* 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;
Initial value none
Applies to all elements
Inherited no
Media all
Computed value as specified
Animation type discrete
Canonical order the unique non-ambiguous order defined by the formal grammar

Syntax

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 syntax

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

Examples

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

Browser compatibility

Feature Chrome Edge Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support 2.0 (Yes) 1.0 8.0 9.2 (Yes)[1]
Feature Android Edge Firefox Mobile (Gecko) IE Phone Opera Mobile Safari Mobile
Basic support ? (Yes) ? ? ? ?

[1] This feature is probably implemented since Safari 3.0.

See also

© 2005–2017 Mozilla Developer Network and individual contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/CSS/counter-increment