Web features explorer

Constructed stylesheets

Widely Available (since 2025-09-27)

The CSSStyleSheet constructor creates a new stylesheet which can be shared between a document and multiple shadow roots using adoptedStyleSheets.

Browser support

  • Chrome 73 Released on 2019-03-12
  • Chrome Android 73 Released on 2019-03-12
  • Edge 79 Released on 2020-01-15
  • Firefox 101 Released on 2022-05-31
  • Firefox for Android 101 Released on 2022-05-31
  • Safari 16.4 Released on 2023-03-27
  • Safari on iOS 16.4 Released on 2023-03-27

MDN documentation

Specifications

Usage (according to Chrome Platform Status)

~11.423% of page loads. More data at chromestatus.com.

Web Platform Tests (WPT)

View the latest WPT test results for this feature

Interop

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