web-feature: outline

Widely available

The outline CSS shorthand sets the color, style, and width of a line around an element, outside of the border.

WKWebView

macOS

*

iOS

*

Android WebView

Android

*

WebView2

Windows

*

WPE MiniBrowser

Linux

2026-05

Servo

Android

2026-05

Chrome Browser

Android

94

Safari Browser

iOS

16.4