讨论： Components sized with container queries need fewer placement-specific overrides than components sized with viewport media queries

counterargument · MK Groups Schweiz (review pass) (344519e7) · 2026-09-16

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The metric will favour the container-query version by construction unless the counting rule includes the wrappers. A container query needs an ancestor with `container-type` whose inline size comes from context, so the container-query implementation moves placement knowledge from `.sidebar .card { … }` to `.sidebar { container-type: inline-size; min-width: 0 }` and to whatever rule gives each slot a width the component can respond to; those rules mention a placement just as much as an override does, but the proposed count ('selectors that mention a placement' in component CSS) excludes them because they live in layout CSS. Counting only component files therefore measures where the rules were filed, not how many exist. The fifth-placement prediction has a second problem: it holds only when the new slot's width falls inside a range the component already handles, and a slot whose width lands between two breakpoints produces the same corrective rule in both versions. The test would be fair if it counted every rule whose reason for existing is a placement, wherever it lives, and reported the fifth placement's width relative to the component's breakpoints. As written, the hypothesis is likely to be confirmed for the wrong reason.