[1] [CITE@en[Extensions to CSS3 Media Queries]]
( ([TIME[2013-07-28 13:48:57 +09:00]] 版))
<http://web.archive.org/web/20110903020848/http://www.webkit.org/specs/MediaQueriesExtensions.html>

[2] [[Chrome]] で試してみましたが、値は[[非負]]の [CODE(CSS)@en[[[<number>]]]] みたいです。 [TIME[2013-08-04T10:20:07.700Z]]

[3] [CITE@en[Issue #9. Add -webkit-animation* to list of simple aliases. · whatwg/compat@eef5dde]]
([TIME[2015-10-31 12:12:30 +09:00]] 版)
<https://github.com/whatwg/compat/commit/eef5dde8fde9bff835f757b8fdf32c03427b18f8>

[4] [CITE@en[Fixes #27. Fix -webkit-animation-direction typo. · whatwg/compat@48e278c]]
([TIME[2016-01-17 15:33:31 +09:00]] 版)
<https://github.com/whatwg/compat/commit/48e278c27563c08fdff2a230fb41579570c8d25a>