[1] [CITE[<progress> processing and authoring requirements]]
([TIME[2009-10-18 16:40:33 +09:00]] 版)
<http://suika.fam.cx/~wakaba/-temp/test/html/progress/reqs/tests.html>

[2] [CITE[/trunk/WebCore/css/html.css – WebKit]]
([TIME[2010-07-04 12:20:03 +09:00]] 版)
<http://trac.webkit.org/browser/trunk/WebCore/css/html.css>