The counter-set CSS property sets a CSS counter to a given value. It manipulates the value of existing counters, and will only create new counters if there isn't already a counter of the given name on the element.

/* Set "my-counter" to 0 */ counter-set: my-counter;  /* Set "my-counter" to -1 */ counter-set: my-counter -1;  /* Set "counter1" to 1, and "counter2" to 4 */ counter-set: counter1 1 counter2 4;  /* Cancel any counter that could have been set in less specific rules */ counter-set: none;  /* Global values */ counter-set: inherit; counter-set: initial; counter-set: revert; counter-set: unset; 

counter-set

The counter-set CSS property sets a CSS counter to a given value. It manipulates the value of existing counters, and will only create new counters if there isn't already a counter of the given name on the element.

Note: The counter's value can be incremented or decremented using the counter-increment CSS property.

Syntax

/* Set "my-counter" to 0 */ counter-set: my-counter;  /* Set "my-counter" to -1 */ counter-set: my-counter -1;  /* Set "counter1" to 1, and "counter2" to 4 */ counter-set: counter1 1 counter2 4;  /* Cancel any counter that could have been set in less specific rules */ counter-set: none;  /* Global values */ counter-set: inherit; counter-set: initial; counter-set: revert; counter-set: unset; 

The counter-set 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 reset 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 set.

<integer>

The value to set the counter to on each occurrence of the element. Defaults to 0 if not specified. If there isn't currently a counter of the given name on the element, the element will create a new counter of the given name with a starting value of 0 (though it may then immediately set or increment that value to something different).

none

No counter set is to be performed. This can be used to override a counter-set defined in a less specific rule.

Formal definition

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

Formal syntax

[ <counter-name> <integer>? ]+ | none
where <counter-name> = <custom-ident>

Examples

Setting named counters

h1 {   counter-set: chapter section 1 page;   /* Sets the chapter and page counters to 0,      and the section counter to 1 */ } 

Specifications

Specification
CSS Lists and Counters Module Level 3 # propdef-counter-set

See also

Using CSS Counters counter-increment counter-reset @counter-style counter() and counters() functions content property