* 仕様書

[REFS[
- [9] [CITE@en[CSS Basic User Interface Module Level 3 (CSS3 UI)]] ([[Tantek Çelik]] 著, [TIME[2011-09-29 17:32:08 +09:00]] 版) <http://dev.w3.org/csswg/css3-ui/#pseudo-default>
]REFS]

* 歴史

** CSS UI

[REFS[
- [11] [CITE@en[CSS3 Basic User Interface Module]] ([[Tantek Çelik]] 著, [TIME[2003-07-04 02:51:33 +09:00]] 版) <http://www.w3.org/TR/2003/WD-css3-ui-20030703/#pseudo-default>
- [10] [CITE@en[CSS Basic User Interface Module Level 3 (CSS3 UI)]] ([[Tantek Çelik]] 著, [TIME[2011-09-29 17:32:08 +09:00]] 版) <http://dev.w3.org/csswg/css3-ui/#pseudo-default>
- [5]
[CITE[Bug 302186 &#8211; Support :default pseudoclass]] ([TIME[2008-09-16 07:42:32 +09:00]] 版) <https://bugzilla.mozilla.org/show_bug.cgi?id=302186>
]REFS]

[12] >>11 が初出のようです。

** HTML

[REFS[
- [6] [CITE@en-GB-x-Hixie[Web Forms 2.0]]
([TIME[2009-01-05 20:07:15 +09:00]] 版)
<http://www.whatwg.org/specs/web-forms/current-work/#relation>
- [7] [CITE@en[HTML5 Revision Tracker]]
([TIME[2010-08-03 23:55:33 +09:00]] 版)
<http://html5.org/tools/web-apps-tracker?from=5228&to=5229>
- [8] [CITE['''['''whatwg''']''' Should :default apply to checkboxes, radios, and options?]]
([TIME[2010-08-03 23:56:56 +09:00]] 版)
<http://lists.whatwg.org/htdig.cgi/whatwg-whatwg.org/2010-August/027528.html>
]REFS]

* 実装

[REFS[
- [4]
[CITE@en[CSS::default - MDC]] ([CODE[2007-09-01 17:35:18 +09:00]] 版) <http://developer.mozilla.org/en/docs/CSS::default>
]REFS]


[13] [CITE@en-GB-hixie[Web Controls 1.0]]
( ([TIME[2004-11-09 08:49:52 +09:00]] 版))
<http://www.whatwg.org/specs/web-controls/current-work/#pseudo-classes>