W3C CSS specifications
E171237
W3C CSS specifications are the official World Wide Web Consortium standards that define how Cascading Style Sheets control the presentation and layout of web content across browsers and devices.
All labels observed (5)
| Label | Occurrences |
|---|---|
| CSS specifications | 3 |
| W3C CSS specifications canonical | 2 |
| CSS specs | 1 |
| Cascading Style Sheets (CSS) specifications | 1 |
| W3C CSS specification process | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1490443 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: W3C CSS specifications Context triple: [W3C markup validation tools, implementsStandard, W3C CSS specifications]
-
A.
CSS Level 1 specification
The CSS Level 1 specification is the original World Wide Web Consortium standard that introduced Cascading Style Sheets as a way to control the presentation of HTML documents on the web.
-
B.
CSS Cascade and Inheritance Module
The CSS Cascade and Inheritance Module is a W3C specification that defines how CSS declarations are prioritized, combined, and passed down through the document tree to determine the final computed styles of elements.
-
C.
W3C CSS Working Group
The W3C CSS Working Group is the World Wide Web Consortium team responsible for designing and standardizing Cascading Style Sheets (CSS) for the web.
-
D.
CSS Backgrounds and Borders Module
The CSS Backgrounds and Borders Module is a W3C CSS specification that defines advanced features for styling element backgrounds, borders, and related visual effects on the web.
-
E.
W3C Recommendation
A W3C Recommendation is a mature, stable web standard published by the World Wide Web Consortium to promote interoperability and best practices across the World Wide Web.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: W3C CSS specifications Target entity description: W3C CSS specifications are the official World Wide Web Consortium standards that define how Cascading Style Sheets control the presentation and layout of web content across browsers and devices.
-
A.
CSS Level 1 specification
The CSS Level 1 specification is the original World Wide Web Consortium standard that introduced Cascading Style Sheets as a way to control the presentation of HTML documents on the web.
-
B.
CSS Cascade and Inheritance Module
The CSS Cascade and Inheritance Module is a W3C specification that defines how CSS declarations are prioritized, combined, and passed down through the document tree to determine the final computed styles of elements.
-
C.
W3C CSS Working Group
The W3C CSS Working Group is the World Wide Web Consortium team responsible for designing and standardizing Cascading Style Sheets (CSS) for the web.
-
D.
CSS Backgrounds and Borders Module
The CSS Backgrounds and Borders Module is a W3C CSS specification that defines advanced features for styling element backgrounds, borders, and related visual effects on the web.
-
E.
W3C Recommendation
A W3C Recommendation is a mature, stable web standard published by the World Wide Web Consortium to promote interoperability and best practices across the World Wide Web.
- F. None of above. chosen
Statements (109)
| Predicate | Object |
|---|---|
| instanceOf |
technical specification
ⓘ
web standard specification collection ⓘ |
| abbreviation |
W3C CSS specifications
self-linksurface differs
ⓘ
surface form:
CSS specs
|
| appliesTo |
HTML documents
ⓘ
MathML documents ⓘ SVG documents ⓘ XML documents ⓘ |
| defines |
CSS UI properties
ⓘ
CSS animations ⓘ CSS at-rules ⓘ CSS Backgrounds and Borders Module ⓘ
surface form:
CSS backgrounds and borders
CSS box model ⓘ CSS cascade and inheritance rules ⓘ CSS color contrast functions (in newer levels) ⓘ CSS color models ⓘ CSS containment ⓘ CSS counters ⓘ CSS custom properties ⓘ CSS environment variables (env()) ⓘ CSS filters ⓘ CSS flexbox layout ⓘ CSS fonts and text rendering ⓘ CSS Fragmentation Module ⓘ
surface form:
CSS fragmentation
CSS Grid Layout Level 1 Editor’s Draft ⓘ
surface form:
CSS grid layout
CSS Images Module ⓘ
surface form:
CSS images
CSS layering and stacking context ⓘ CSS layout models ⓘ CSS Writing Modes Module ⓘ
surface form:
CSS line breaking rules
CSS lists and markers ⓘ CSS Logical Properties and Values Module ⓘ
surface form:
CSS logical properties
CSS Backgrounds and Borders Module ⓘ
surface form:
CSS masking and clipping
CSS Media Queries ⓘ
surface form:
CSS media feature queries
CSS Media Queries ⓘ
surface form:
CSS media queries
CSS Multi-column Layout Module Level 1 ⓘ
surface form:
CSS multi-column layout
CSSOM View Module ⓘ
surface form:
CSS object model behavior
CSS Overflow Module ⓘ
surface form:
CSS overflow behavior
CSS Paged Media Module ⓘ
surface form:
CSS paged media
CSS positioning ⓘ CSS regions model (deprecated in practice) ⓘ CSS Ruby Layout Module Level 1 ⓘ
surface form:
CSS ruby layout
CSS scroll snapping ⓘ CSS scrollbars styling ⓘ CSS selectors ⓘ CSS shapes ⓘ CSS Speech Module ⓘ
surface form:
CSS speech properties
CSS text decoration ⓘ CSS Overflow Module ⓘ
surface form:
CSS text overflow
CSS Transforms Module ⓘ
surface form:
CSS transforms
CSS transitions ⓘ CSS values and units ⓘ CSS viewport units ⓘ CSS visual formatting model ⓘ CSS will-change hinting ⓘ CSS Writing Modes Module ⓘ
surface form:
CSS writing modes
Cascading Style Sheets language ⓘ syntax for CSS ⓘ |
| developedBy | W3C CSS Working Group ⓘ |
| ensures | cross-browser interoperability for CSS features ⓘ |
| goal |
ensure interoperable CSS implementations across browsers
ⓘ
separate content from presentation on the web ⓘ |
| governs |
layout behavior across devices
ⓘ
visual presentation of web content ⓘ |
| includes |
CSS Animations Module
ⓘ
surface form:
CSS Animations Module Level 1
CSS Backgrounds and Borders Module ⓘ
surface form:
CSS Backgrounds and Borders Module Level 3
CSS Cascade and Inheritance Module ⓘ
surface form:
CSS Cascading and Inheritance Level 3
CSS Cascade and Inheritance Module ⓘ
surface form:
CSS Cascading and Inheritance Level 4
CSS Cascade and Inheritance Module ⓘ
surface form:
CSS Cascading and Inheritance Level 5
CSS Color Module ⓘ
surface form:
CSS Color Module Level 3
CSS Color Module ⓘ
surface form:
CSS Color Module Level 4
CSS Conditional Rules Module Level 3 ⓘ CSS Containment Module Level 1 ⓘ CSS Custom Properties for Cascading Variables Module Level 1 ⓘ CSS Flexbox Layout Level 1 Editor’s Draft ⓘ
surface form:
CSS Flexible Box Layout Module Level 1
CSS Fonts Module Level 3 ⓘ CSS Grid Layout Level 1 Editor’s Draft ⓘ
surface form:
CSS Grid Layout Module Level 1
CSS Multi-column Layout Module Level 1 ⓘ CSS Overflow Module ⓘ
surface form:
CSS Overflow Module Level 3
CSS Paged Media Module ⓘ
surface form:
CSS Paged Media Module Level 3
CSS Scroll Snap Module ⓘ
surface form:
CSS Scroll Snap Module Level 1
CSS Text Module ⓘ
surface form:
CSS Text Decoration Module Level 3
CSS Text Module ⓘ
surface form:
CSS Text Module Level 3
CSS Transforms Module ⓘ
surface form:
CSS Transforms Module Level 1
CSS Transitions Module ⓘ
surface form:
CSS Transitions Module Level 1
CSS Values and Units Module ⓘ
surface form:
CSS Values and Units Module Level 3
CSS Will Change Module Level 1 ⓘ CSS Writing Modes Module ⓘ
surface form:
CSS Writing Modes Level 3
CSS Level 1 specification ⓘ
surface form:
CSS1 specification
CSS2.1 specification ⓘ CSS Conditional Rules Module Level 3 ⓘ
surface form:
Media Queries Level 3
Selectors Level 3 ⓘ Selectors Level 4 ⓘ |
| includesStatus |
Candidate Recommendation
ⓘ
Proposed Recommendation ⓘ W3C Note ⓘ W3C Recommendation ⓘ Working Draft ⓘ |
| maintainedBy | World Wide Web Consortium ⓘ |
| organizedAs | CSS levels and modules ⓘ |
| partOf |
W3C CSS Working Group
ⓘ
surface form:
W3C Style Activity
|
| publishedAt | https://www.w3.org/Style/CSS/specs.en.html ⓘ |
| relatedStandard |
ARIA specifications
ⓘ
DOM specifications ⓘ HTML Living Standard ⓘ SVG specifications ⓘ |
| standardizes | presentation of web documents ⓘ |
| statusProcess |
W3C Recommendation Track
ⓘ
surface form:
W3C Recommendation track
|
| usedBy |
authoring tool implementers
ⓘ
web browser vendors ⓘ web developers ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: W3C CSS specifications Description of subject: W3C CSS specifications are the official World Wide Web Consortium standards that define how Cascading Style Sheets control the presentation and layout of web content across browsers and devices.
Referenced by (8)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Cascading Style Sheets (CSS) specifications
this entity surface form:
CSS specifications
this entity surface form:
CSS specs
this entity surface form:
CSS specifications
subject surface form:
Ian Hickson
this entity surface form:
CSS specifications
this entity surface form:
W3C CSS specification process