In Firefox 64, I intend to turn accepting arbitrary webkit-prefixed pseudo-element in selectors on by default on all platforms. It has been developed behind "layout.css.unknown-webkit-pseudo-element". WebKit and Blink have had this behavior for long.
Bug to turn on by default: https://bugzilla.mozilla.org/show_bug.cgi?id=1486325 This feature was previously discussed in this "intent to implement" thread: https://groups.google.com/d/msg/mozilla.dev.platform/YU4jPJc6p6Y/CS-f2qeOAQAJ _______________________________________________ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform
