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This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The :dir() CSS pseudo-class matches elements based on the directionality of the text contained in them.

/* Selects any element with right-to-left text */
:dir(rtl) {
  background-color: red;
}

The :dir() pseudo-class uses only the semantic value of the directionality, i.e., the one defined in the document itself. It doesn't account for styling directionality, i.e., the directionality set by CSS properties such as direction.

Note: Be aware that the behavior of the :dir() pseudo-class is not equivalent to the [dir=…] attribute selectors. The latter match the HTML dir attribute, and ignore elements that lack it — even if they inherit a direction from their parent. (Similarly, [dir=rtl] and [dir=ltr] won't match the auto value.) In contrast, :dir() will match the value calculated by the user agent, even if inherited.

Note: In HTML, the direction is determined by the dir attribute. Other document types may have different methods.

Syntax

The :dir() pseudo-class requires one parameter, representing the text directionality you want to target.

Parameters

ltr
Target left-to-right elements.
rtl
Target right-to-left elements.

Formal syntax

:dir( ltr | rtl )

Example

HTML

<div dir="rtl">
  <span>test1</span>
  <div dir="ltr">test2
    <div dir="auto">עִבְרִית</div>
  </div>
</div>

CSS

:dir(ltr) {
  background-color: yellow;
}

:dir(rtl) {
  background-color: powderblue;
}

Result

Specifications

Specification Status Comment
HTML Living Standard
The definition of ':dir(ltr)' in that specification.
Living Standard No changes.
Selectors Level 4
The definition of ':dir()' in that specification.
Working Draft 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 No support NoFirefox Full support 49
Full support 49
No support 17 — 53
Prefixed
Prefixed Implemented with the vendor prefix: -moz-
IE No support NoOpera No support NoSafari No support NoWebView Android No support NoChrome Android No support NoEdge Mobile No support NoFirefox Android Full support 49
Full support 49
No support 17 — 53
Prefixed
Prefixed Implemented with the vendor prefix: -moz-
Opera Android No support NoSafari iOS No support NoSamsung Internet Android No support No

Legend

Full support  
Full support
No support  
No support
Experimental. Expect behavior to change in the future.
Experimental. Expect behavior to change in the future.
Requires a vendor prefix or different name for use.
Requires a vendor prefix or different name for use.

See also

  • Language-related pseudo-classes: :lang, :dir

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Poslední aktualizace od: fscholz,