CSS containment
E662774
CSS containment is a web performance and layout feature that lets developers explicitly limit a DOM subtree’s impact on the rest of the page, enabling more efficient rendering and styling.
All labels observed (1)
| Label | Occurrences |
|---|---|
| CSS containment canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7420677 — 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: CSS containment Context triple: [W3C CSS specifications, defines, CSS containment]
-
A.
CSS Overflow Module
The CSS Overflow Module is a W3C specification that defines how content that exceeds an element’s box is clipped, scrolled, or otherwise rendered in web layouts.
-
B.
CSS Regions Module
The CSS Regions Module is a proposed CSS specification that enables flowing content through multiple, non-contiguous layout regions to create more complex, magazine-like page designs on the web.
-
C.
CSS Fragmentation Module
The CSS Fragmentation Module is a W3C specification that defines how content is split and flowed across pages, columns, and regions in CSS layouts.
-
D.
CSS Box Model Module
The CSS Box Model Module is a core CSS specification that defines how elements’ content, padding, borders, and margins are calculated and rendered in layout.
-
E.
CSS Positioning Module
The CSS Positioning Module is a W3C-defined specification that details how elements are placed and layered on web pages using positioning properties like static, relative, absolute, fixed, and sticky.
- 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: CSS containment Target entity description: CSS containment is a web performance and layout feature that lets developers explicitly limit a DOM subtree’s impact on the rest of the page, enabling more efficient rendering and styling.
-
A.
CSS Overflow Module
The CSS Overflow Module is a W3C specification that defines how content that exceeds an element’s box is clipped, scrolled, or otherwise rendered in web layouts.
-
B.
CSS Regions Module
The CSS Regions Module is a proposed CSS specification that enables flowing content through multiple, non-contiguous layout regions to create more complex, magazine-like page designs on the web.
-
C.
CSS Fragmentation Module
The CSS Fragmentation Module is a W3C specification that defines how content is split and flowed across pages, columns, and regions in CSS layouts.
-
D.
CSS Box Model Module
The CSS Box Model Module is a core CSS specification that defines how elements’ content, padding, borders, and margins are calculated and rendered in layout.
-
E.
CSS Positioning Module
The CSS Positioning Module is a W3C-defined specification that details how elements are placed and layered on web pages using positioning properties like static, relative, absolute, fixed, and sticky.
- F. None of above. chosen
Statements (51)
| Predicate | Object |
|---|---|
| instanceOf |
CSS feature
ⓘ
layout optimization technique ⓘ web performance technique ⓘ |
| affects |
compositing
ⓘ
layout ⓘ paint ⓘ size calculations ⓘ style recalculation ⓘ |
| appliesTo |
block-level elements
ⓘ
inline-level elements ⓘ replaced elements ⓘ |
| benefits |
component-based UI architectures
ⓘ
large, complex web applications ⓘ |
| category |
CSS layout control
ⓘ
CSS performance optimization ⓘ |
| definedBy | CSS Containment Module Level 3 specification NERFINISHED ⓘ |
| enables |
isolation of rendering work
ⓘ
more predictable layout boundaries ⓘ |
| hasProperty | contain ⓘ |
| implementedVia | contain property ⓘ |
| introducedIn | CSS Containment Module Level 1 NERFINISHED ⓘ |
| limits |
layout effects outside the contained element
ⓘ
paint invalidation region ⓘ style recalculation scope ⓘ |
| partOf | CSS Containment Module Level 3 NERFINISHED ⓘ |
| primaryGoal |
enable more efficient rendering
ⓘ
enable more efficient styling ⓘ improve page performance ⓘ limit a DOM subtree’s impact on the rest of the page ⓘ |
| refinedIn |
CSS Containment Module Level 2
NERFINISHED
ⓘ
CSS Containment Module Level 3 NERFINISHED ⓘ |
| relatedTo |
CSS contain-intrinsic-size property
NERFINISHED
ⓘ
CSS content-visibility property ⓘ CSS overflow clipping ⓘ CSS will-change property ⓘ |
| standardizedBy | W3C NERFINISHED ⓘ |
| supportsValue |
auto
ⓘ
block-size ⓘ content ⓘ inline-size ⓘ layout ⓘ layout paint ⓘ layout style paint ⓘ none ⓘ paint ⓘ size ⓘ size layout ⓘ size layout style paint ⓘ strict ⓘ style ⓘ |
| usedWith | subtree of the DOM ⓘ |
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: CSS containment Description of subject: CSS containment is a web performance and layout feature that lets developers explicitly limit a DOM subtree’s impact on the rest of the page, enabling more efficient rendering and styling.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.