`symbols()` CSS function

The symbols() CSS function enables defining counter styles inline, directly as a value of properties such as list-style, providing a less powerful but simpler alternative to the @counter-style method of defining a counter style.

Unlike @counter-style, which defines a reusable counter style, symbols() is anonymous (i.e., it can only be used once). This function accepts strings and images as values. In comparison, the @counter-style's symbols descriptor also accepts identifiers.

Syntax

css

symbols() = symbols( <symbols-type>? [ <string> | <image> ]+ );

<symbols-type> can be one of the following:

cyclic: The system cycles through the given values in the order of their definition, and returns to the start when it reaches the end.
numeric: The system interprets the given values as the successive units of a place-value numbering system.
alphabetic: The system interprets the given values as the digits of an alphabetic numbering system, like a place-value numbering system but without 0.
symbolic: The system cycles through the values, printing them an additional time at each cycle (one time for the first cycle, two times for the second, etc.).
fixed: The system cycles through the given values once, then falls back to Arabic numerals.

Formal syntax

<symbols()> = 
  symbols( <symbols-type>? [ <string> | <image> ]+ )  

<symbols-type> = 
  cyclic      |
  numeric     |
  alphabetic  |
  symbolic    |
  fixed       

<image> = 
  <url>           |
  <image()>       |
  <image-set()>   |
  <cross-fade()>  |
  <element()>     |
  <gradient>      

<image()> = 
  image( <image-tags>? [ <image-src>? , <color>? ]! )  

<image-set()> = 
  image-set( <image-set-option># )  

<cross-fade()> = 
  cross-fade( <cf-image># )  

<element()> = 
  element( <id-selector> )  

<image-tags> = 
  ltr  |
  rtl  

<image-src> = 
  <url>     |
  <string>  

<image-set-option> = 
  [ <image> | <string> ] [ <resolution> || type( <string> ) ]?  

<cf-image> = 
  [ <image> | <color> ]  &&
  <percentage [0,100]>?  

<id-selector> = 
  <hash-token>

Examples

undefined

HTML

html

<ol>
  <li>One</li>
  <li>Two</li>
  <li>Three</li>
  <li>Four</li>
  <li>Five</li>
</ol>

CSS

css

ol {
  list-style: symbols(cyclic "*" "†" "‡");
}

Result

Specifications

CSS Counter Styles Level 3

symbols() CSS function