CSSPositionTryRule: style property

Baseline 2026
Newly available

Since January 2026, this feature works across the latest devices and browser versions. This feature might not work in older devices or browsers.

The read-only style property of the CSSPositionTryRule interface contains a CSSPositionTryDescriptors object representing the descriptors available in the @position-try rule's body.

Value

A CSSPositionTryDescriptors object.

Although the style property itself is read-only in the sense that you can't replace the CSSPositionTryDescriptors object, you can still assign to the style property directly, which is equivalent to assigning to its cssText property. You can also modify the CSSPositionTryDescriptors object using the setProperty() and removeProperty() methods.

Examples

The CSS includes a @position-try at-rule with a name of --custom-right and three descriptors.

css
@position-try --custom-bottom {
  top: anchor(bottom);
  min-width: 100px;
  margin-top: 10px;
}
js
const myRules = document.styleSheets[0].cssRules;
const tryOption = myRules[0]; // a CSSPositionTryRule
console.log(tryOption.style.top); // "anchor(bottom)"
console.log(tryOption.style["min-width"]); // "100px"
console.log(tryOption.style.positionArea); // ""; no position-area specified

Specifications

Specification
CSS Anchor Positioning Module Level 1
# dom-csspositiontryrule-style

Browser compatibility

desktop mobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
style
Chrome – Full support
Chrome 125 (Release date: 2024-05-14)
footnote Full support
Edge – Full support
Edge 125 (Release date: 2024-05-17)
footnote Full support
Firefox – Full support
Firefox 147 (Release date: 2026-01-13)
footnote Full support
Opera – Full support
Opera 111 (Release date: 2024-06-12)
footnote Full support
Safari – Full support
Safari 26 (Release date: 2025-09-15)
footnote Full support
Chrome Android – Full support
Chrome Android 125 (Release date: 2024-05-14)
footnote Full support
Firefox for Android – Full support
Firefox for Android 147 (Release date: 2026-01-13)
footnote Full support
Opera Android – Full support
Opera Android 83 (Release date: 2024-06-25)
footnote Full support
Safari on iOS – Full support
Safari on iOS 26 (Release date: 2025-09-15)
footnote Full support
Samsung Internet – Full support
Samsung Internet 27 (Release date: 2024-11-06)
footnote Full support
WebView Android – Full support
WebView Android 125 (Release date: 2024-05-14)
footnote Full support
WebView on iOS – Full support
WebView on iOS 26 (Release date: 2025-09-15)
footnote Full support

Legend

Tip: you can click/tap on a cell for more information.

Full support
Full support

See also