On the standards track: Yes
Is Experimental: No
Is Deprecated: No
In Chrome version 27 on 2013-05-21
In Chrome Android version 27 on 2013-05-22
In Edge version 79 on 2020-01-15
In Firefox version 32 on 2014-09-02 Note: Firefox 55 removes support for <style scoped> but not for the :scope pseudo-class, which is still supported. <style scoped> made it possible to explicitly set up element scopes, but ongoing discussions about the design of this feature as well as lack of other implementations resulted in the decision to remove it.
In Firefox for Android version 32 on 2014-09-02 Note: Firefox for Android 55 removes support for <style scoped> but not for the :scope pseudo-class, which is still supported. <style scoped> made it possible to explicitly set up element scopes, but ongoing discussions about the design of this feature as well as lack of other implementations resulted in the decision to remove it.
Not in Internet Explorer
In Quest Browser version 5.0 on undefined
In Opera version 15 on 2013-07-02
In Opera Android version 15 on 2013-07-08
In Safari version 7 on 2013-10-22
In Safari on iOS version 7 on 2013-09-18
In Samsung Internet version 1.5 on 2013-09-25
In WebView Android version 4.4 on 2013-12-09
In WebView on iOS version 7 on 2013-09-18