[1] When should a StyleSheetList collection update? ( 版) <https://miketaylr.com/posts/2014/01/when-should-a-stylesheetlist-update.html>
[2] [cssom] Remove [LegacyArrayClass] from CSSOM interfaces. (emilio著, ) <https://github.com/w3c/csswg-drafts/commit/b05eb1b9c05c22f771aff6a3ae7cdbb4a925522e>
[3] [cssom] Why is CSSRuleList [LegacyArrayClass] · Issue #2601 · w3c/csswg-drafts () <https://github.com/w3c/csswg-drafts/issues/2601>