The fallback descriptor can be used to specify a counter style to fall back to if the current counter style cannot create a marker representation for a particular counter value. If the specified fallback style is also unable to construct a representation, then its fallback style will be used. If a valid fallback style is not specified, it defaults to decimal.

A couple of scenarios where a fallback style will be used are:

  • When the range descriptor is specified for a counter style, the fallback style will be used to represent values that fall outside the range.
  • When the fixed system is used and there are not enough symbols to cover all the list items, the fallback style will be used for the rest of the list items.

Related at-rule@counter-style
Initial valuedecimal
Mediaall
Computed valueas specified
Canonical orderthe unique non-ambiguous order defined by the formal grammar

Syntax

/* Keyword values */
fallback: lower-alpha;
fallback: custom-gangnam-style;

Formal syntax

<counter-style-name>

where
<counter-style-name> = <custom-ident>

Example

HTML

<ul class="list">
  <li>One</li>
  <li>Two</li>
  <li>Three</li>
  <li>Four</li>
  <li>Five</li>
</ul>

CSS

@counter-style fallback-example {
  system: fixed; symbols: "\24B6" "\24B7" "\24B8";
  fallback: upper-alpha;
}

.list {
  list-style: fallback-example;
}

Result

Specifications

Specification Status Comment
CSS Counter Styles Level 3
The definition of 'fallback' in that specification.
Candidate Recommendation Initial definition

Browser compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidEdge MobileFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
Basic support
Experimental
Chrome No support NoEdge ? Firefox Full support 33IE No support NoOpera No support NoSafari No support NoWebView Android No support NoChrome Android ? Edge Mobile ? Firefox Android Full support 33Opera Android No support NoSafari iOS No support NoSamsung Internet Android No support No

Legend

Full support  
Full support
No support  
No support
Compatibility unknown  
Compatibility unknown
Experimental. Expect behavior to change in the future.
Experimental. Expect behavior to change in the future.

See also

Document Tags and Contributors

Contributors to this page: mfluehr, fscholz, duncanmcdonald, Sebastianz, crackien, kscarfone, jsx
Last updated by: mfluehr,