Example
A way to number sections and sub-sections with "Section 1", "1.1", "1.2", etc.:
body
{
counter-reset: section;
}
h1
{
counter-reset: subsection;
}
h1:before
{
counter-increment: section;
content: "Section " counter(section) ". ";
}
h2:before
{
counter-increment: subsection;
content: counter(section) "." counter(subsection) " ";
}
Try it Yourself »
Definition and Usage
The counter-increment property increments one or more counter values.
The counter-increment property is usually used together with the counter-reset property and the content property.
| Default value: | none |
|---|---|
| Inherited: | no |
| Animatable: | no. Read about animatable |
| Version: | CSS2 |
| JavaScript syntax: | object.style.counterIncrement = "subsection"; Try it |
Browser Support
The numbers in the table specify the first browser version that fully supports the property.
| Property | |||||
|---|---|---|---|---|---|
| counter-increment | 4.0 | 8.0 | 2.0 | 3.1 | 9.6 |
Note: IE8 supports the counter-increment property only if a !DOCTYPE is specified.
CSS Syntax
counter-increment: none|id|initial|inherit;
Property Values
| Value | Description |
|---|---|
| none | Default value. No counters will be incremented |
| id number | The id defines which counter that should be incremented. The number sets how much the counter will increment on each occurrence of the selector. The default increment is 1. 0 or negative values, are allowed. If the id refers to a counter that has not been initialized by counter-reset, the default initial value is 0 |
| initial | Sets this property to its default value. Read about initial |
| inherit | Inherits this property from its parent element. Read about inherit |
Related Pages
CSS reference: :before pseudo element
CSS reference: :after pseudo element
CSS reference: content property
CSS reference: counter-reset property
HTML DOM reference: counterIncrement property