Summary: This pseudo-element is rendered immediately below every fullscreen element, and covers the other part of the document by default. This is part of the effort to update our Fullscreen API implementation to the latest spec. And it is the last non-trivial part before I'm going to unprefix the Fullscreen API.
Bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1064843 Link to standard: https://fullscreen.spec.whatwg.org/#::backdrop-pseudo-element Platform coverage: all Target release: 44 Preference behind which this will be implemented: none DevTools bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1209831 Other browser support: IE has shipped a prefixed version of this pseudo-element for fullscreen since 11, and Edge shpped it unprefixed: https://msdn.microsoft.com/en-us/library/dn312072%28v=vs.85%29.aspx Blink has shipped this pseudo-element unprefixed for modal <dialog> element (but not yet for fullscreen) - Xidorn _______________________________________________ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform
