web-feature: :focus-within

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The :focus-within CSS pseudo-class matches an element if the element or any of its children are focused.

WKWebView

macOS

*

iOS

*

Android WebView

Android

*

WebView2

Windows

*

WPE MiniBrowser

Linux

2026-07

Servo

Android

2026-07

ArkWeb

HarmonyOS

*

Chrome Browser

Android

60

Safari Browser

iOS

10.3