CSSOM updates to match web API templates

[hamishwillee]

FF154 adds preview support for the CSS Typed OM API. As part of that noticed a bunch of inconsistencies in the CSSOM "parent interface".

Changes made here:

• Adds "interface of the [CSSOM API] ..." style boilerplate for the different interfaces, where missing
• For the CSSOM page, this had a huge list of interfaces that contained interfaces mixed from different related APIs, and also a big list of Typed OM interfaces.
  • I've tried to move towards the normal structure - adding "RElated APIs" sections and removing interfaces in their APIs from the big list.
  • This is a little non-standard because we don't normally cross link interfaces in this way, but CSSOM is messy.

This is not exhaustive - its just better.

Related docs can be tracked in #44849

[github-actions]

Preview URLs (39 pages)

• /en-US/docs/Web/API/CSSConditionRule
• /en-US/docs/Web/API/CSSCounterStyleRule
• /en-US/docs/Web/API/CSSFontFaceDescriptors
• /en-US/docs/Web/API/CSSFontFaceRule
• /en-US/docs/Web/API/CSSFontFeatureValuesRule
• /en-US/docs/Web/API/CSSFunctionDeclarations
• /en-US/docs/Web/API/CSSFunctionDescriptors
• /en-US/docs/Web/API/CSSFunctionRule
• /en-US/docs/Web/API/CSSGroupingRule
• /en-US/docs/Web/API/CSSImageValue
• /en-US/docs/Web/API/CSSImportRule
• /en-US/docs/Web/API/CSSKeyframeRule
• /en-US/docs/Web/API/CSSKeyframesRule
• /en-US/docs/Web/API/CSSMediaRule
• /en-US/docs/Web/API/CSSNamespaceRule
• /en-US/docs/Web/API/CSSNestedDeclarations
• /en-US/docs/Web/API/CSSPageRule
• /en-US/docs/Web/API/CSSPositionTryDescriptors
• /en-US/docs/Web/API/CSSPositionTryRule
• /en-US/docs/Web/API/CSSPositionValue
• /en-US/docs/Web/API/CSSRuleList
• /en-US/docs/Web/API/CSSRule
• /en-US/docs/Web/API/CSSStartingStyleRule
• /en-US/docs/Web/API/CSSStyleDeclaration
• /en-US/docs/Web/API/CSSStyleRule
• /en-US/docs/Web/API/CSSStyleSheet
• /en-US/docs/Web/API/CSSSupportsRule
• /en-US/docs/Web/API/CSS_Object_Model
• /en-US/docs/Web/API/CSS_Typed_OM_API/Guide
• /en-US/docs/Web/API/CSS_Typed_OM_API
• /en-US/docs/Web/API/CSS
• /en-US/docs/Web/API/CaretPosition
• /en-US/docs/Web/API/MediaList
• /en-US/docs/Web/API/MediaQueryListEvent
• /en-US/docs/Web/API/MediaQueryList
• /en-US/docs/Web/API/Screen
• /en-US/docs/Web/API/StyleSheetList
• /en-US/docs/Web/API/StyleSheet
• /en-US/docs/Web/API/TransitionEvent

Flaws (1)

Note! 38 documents with no flaws that don't need to be listed. 🎉

Found an unexpected or unresolvable flaw? Please report it here.

URL: /en-US/docs/Web/API/CSS_Object_Model
Title: CSS Object Model (CSSOM)
Flaw count: 1

• macros:
  • Macro domxref produces link /en-US/docs/Web/API/CSSMarginRule which doesn't resolve

(comment last updated: 2026-08-23 23:53:38)

[github-actions]

This pull request has merge conflicts that must be resolved before it can be merged.

[github-actions]

This pull request has merge conflicts that must be resolved before it can be merged.