seamless="" should also make media queries get evaluated against the nearest
ancestor non-seamless browsing context. See
Posted from: 2620:0:1000:147d:fa1e:dfff:fedd:ce8d by email@example.com
User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_5_8) AppleWebKit/535.8 (KHTML, like Gecko) Chrome/17.0.942.0 Safari/535.8
On the other hand, I've heard people request the ability to use media queries on parts of a page (particularly when designing page modules that can be reused). But that only works for queries on things that are clearly input rather than output (in general, widths as input and heights as output), and it might be hard to define how.
This bug was cloned to create bug 17982 as part of operation convergence.
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Change Description: applied patch
Rationale: adopted resolution by WHATWG