lgtm3
On 3/30/26 7:29 p.m., 'Daniel Clark' via blink-dev wrote:
LGTM2
*From:*Rick Byers <[email protected]>
*Sent:* Monday, March 30, 2026 12:22 PM
*To:* Rune Lillesveen <[email protected]>
*Cc:* blink-dev <[email protected]>
*Subject:* [EXTERNAL] Re: [blink-dev] Intent to Ship: CSS Name-only
Container Queries
Sounds close to a bugix to me, LGTM1
On Mon, Mar 30, 2026 at 2:15 PM Rune Lillesveen <[email protected]>
wrote:
*Contact emails*
*[email protected] <mailto:[email protected]>*
**
*Specification*
*https://drafts.csswg.org/css-conditional-5/#container-rule
<https://drafts.csswg.org/css-conditional-5/#container-rule>*
**
*Summary*
A CSS query container can be queried based on its container-name
only, and the container does not need any container-type set:
<style>
#container { container-name: --foo; }
@container --foo {
input { background-color: green; }
}
<style>
<div id="container">
<div><input></div>
</div>
Previously, @container required some query in addition to the name.
**
*Blink component*
*Blink>CSS
<https://issues.chromium.org/issues?q=customfield1222907:%22Blink%3ECSS%22>*
**
*Web Feature ID*
*container-queries <https://webstatus.dev/features/container-queries>*
**
*Motivation*
Catch up with spec and other implementations which are about to
ship support for name-only queries.
**
*Initial public proposal*
/No information provided/
**
*TAG review*
/No information provided/
**
*TAG review status*
Not applicable
**
*Goals for experimentation*
None
**
*Risks*
*Interoperability and Compatibility*
Since both WebKit and Gecko are about to ship, not shipping would
be an interop risk. There is a potential for contents of existing
@container blocks to start applying, where they would currently be
skipped, but as they would be of no use today the risk should be low.
/Gecko/:
Shipped/Shipping (https://bugzilla.mozilla.org/show_bug.cgi?id=2016474
<https://bugzilla.mozilla.org/show_bug.cgi?id=2016474>) Passes
tests In Firefox nightly 151.0a1
/WebKit/:
Shipped/Shipping (https://bugs.webkit.org/show_bug.cgi?id=302433
<https://bugs.webkit.org/show_bug.cgi?id=302433>) Passses tests in
Safari TP 239
/Web developers/: No signals
/Other signals/:
*WebView application risks*
/Does this intent deprecate or change behavior of existing APIs,
such that it has potentially high risk for Android WebView-based
applications?/
/No information provided/
**
*Debuggability*
/No information provided/
**
*Will this feature be supported on all six Blink platforms
(Windows, Mac, Linux, ChromeOS, Android, and Android WebView)?*
Yes
**
*Is this feature fully tested by web-platform-tests
<https://chromium.googlesource.com/chromium/src/+/main/docs/testing/web_platform_tests.md>?*
Yes
*https://wpt.fyi/results/css/css-conditional/container-queries/query-container-name.html?label=experimental&label=master&aligned
<https://wpt.fyi/results/css/css-conditional/container-queries/query-container-name.html?label=experimental&label=master&aligned>*
*https://wpt.fyi/results/css/css-conditional/container-queries/query-container-name-dynamic.html?label=experimental&label=master&aligned
<https://wpt.fyi/results/css/css-conditional/container-queries/query-container-name-dynamic.html?label=experimental&label=master&aligned>*
**
*Flag name on about://flags*
enable-experimental-web-platform-features
**
*Finch feature name*
ContainerNameOnly
**
*Rollout plan*
Will ship enabled for all users
**
*Requires code in //chrome?*
False
**
*Tracking bug*
*https://crbug.com/40287550 <https://crbug.com/40287550>*
**
*Estimated milestones*
Shipping on desktop
148
DevTrial on desktop
145
Shipping on Android
148
DevTrial on Android
145
Shipping on WebView
148
**
*Anticipated spec changes*
/Open questions about a feature may be a source of future web
compat or interop issues. Please list open issues (e.g. links to
known github issues in the project for the feature specification)
whose resolution may introduce web compat/interop risk (e.g.,
changing to naming or structure of the API in a
non-backward-compatible way)./
/No information provided/
**
*Link to entry on the Chrome Platform Status*
*https://chromestatus.com/feature/5184267522015232?gate=4703221115387904
<https://chromestatus.com/feature/5184267522015232?gate=4703221115387904>*
**
This intent message was generated by Chrome Platform Status
<https://chromestatus.com/>.
--
Rune Lillesveen
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