Minutes Telecon 2025-03-19
- Resolved: Publish FPWD of CSS Forms
- Resolved: Editors will figure out how to fix the OM to match the new behavior, and bring it back to the group for review (Issue #10845: `CSSContainerRule.containerName`/`containerQuery` should return a list)
- Resolved: Drop `:host-context()` (Issue #1914: Dynamic changes of state and attributes referenced by :host-context rules are pretty hard to handle efficiently)
- Resolved: Accept the epsilon proposal, with follow-up refinements as needed (Issue #11864: Make UA, not author, deal with floating point errors in random())
- The folks on the call were leaning toward accepting the proposal for issue #11742 (Maybe min, max and step should not be part of the random-caching-key), however they wanted more time to discuss the concerns in the issue.
Full Meeting Minutes
Minutes Color HDR Breakout 2025-03-12
Color HDR Breakout Session
- There was not clarity on the goal of issue #11558 (auto value of dynamic-range-limit) so discussion will return to the mailing list.
- The debate on issue #11429 (Initial value of `dynamic-range-limit`) focused on what was the best behavior for the web.
- One position was to not limit by default and make sure it’s clear when an HDR image is too bright as it will encourage authors to make good content. The concern with that approach is that authors may have a hard time figuring out how to fix their content.
- The other position was to have an opt-in so that the content was presented well by default but authors with expertise will be able to leverage the properties. The concern with that approach is that it may not be the best once HDR is the prevalent content.
- Folks then discussed their goals for the property to leverage those goals and reach consensus.
- There was a slight lean to have a sdr default with video override, however a key voice wasn’t on the call so discussion will return to github.
Full Meeting Minutes
Minutes Telecon 2025-03-12
- Resolved: view-transition-name:auto never matches an explicit view-transition-name:`ident` (Issue #11614: view-transition-name: auto when matching id should namespace)
- Resolved: Change the way medium-safety alignment is handled to instead invoke the scroll adjustment machinery when handling an anchorpos fixpos element (Issue #10860: Default safety and fixpos)
- Resolved: Autospacing happens *after* bidi-reordering, and we’ll add a complex example to the spec (Issue #10803: Spacing across element boundaries for BiDi content)
- Resolved: No normative change to spec, but add example like Oriol’s and make the implication clearer in the spec. (Issue #10721: Content contribution of min-inline-size:fit-content and max-inline-size:fit-content)
- Resolved: For the final step in determining natural sizes, use the determined aspect-ratio to coerce the block size to match (Issue #11236: How to transfer intrinsic keywords via aspect ratio?)
- Resolved: Add a ‘size’ shorthand property (for ‘width’/’height’), no relation to @page’s ‘size’ descriptor (Issue #820: Adding a ‘size’ shorthand for ‘width’/’height’)
- When discussing issue #11716 (Resolved value of min size properties doesn’t round-trip) the group discovered that the proposed behavior may already be done in flex and grid. There wasn’t time to discuss further on the call, but folks will investigate further to resolve next week.
Full Meeting Minutes
Open UI-WHATWG/HTML-CSSWG Meeting Minutes 2025-03-06
OpenUI-WHATWG/HTML-CSSWG meeting
Connect HTML spec up to new CSS `interactivity` property (WHATWG PR #10956)
- There were a few questions on the proposal and a concern about the property name itself, but generally the group agreed to proceed.
- CSSWG will discuss internally how best to signal the required property is stable.
- There is still a desire for further implementor feedback on the property.
- There were concerns expressed with removing the quirk as previous tests had revealed that would result in meaningful breakage. However, a good goal could be to emulate the quirk with current properties.
Walkthrough of the new CSS Forms spec
- The new CSS Forms spec is close to a request for FPWD.
- Feedback was positive around the draft and generally said it was in the right direction, though still had issues which will need to be addressed.
- The draft separates releasing features in a way that not everyone felt was clear or the best path forward and will need further discussion. There was a focus on how can we make it so authors can opt in to future functionality as its released incrementally.
Full Meeting Minutes
Minutes Telecon 2025-03-05
- A few folks expressed interest in helping to address issue #11775 (Index of local font issues: fingerprinting, I18n, privacy) but had limited capacity. They will reach out to team members to see if they can find folks with capacity to assist. Additionally, ChrisL and astearns will work on addressing suggestions sent privately and furthering discussion on the issue.
- Resolved: Rename string keyword to raw-string (Issue #11645: Distinction between `attr(foo type(‘string’))` and `attr(foo string)` is too subtle)
- Resolved: Default styling for scroll markers will match default styling for links. Default styling for scroll buttons will match default styling for buttons (and appearance will apply accordingly). (Issue #10935: Default UA styles for scroll markers and scroll buttons)
- Resolved: Add a source-order value to reading-flow (Issue #11208: reading-flow and mix of auto-flow and explicit items)
- Resolved: reading-flow: source-order works on block containers. reading-order applies to block-level boxes, and not to inline-level boxes (Issue #11208)
Full Meeting Minutes
Minutes Color HDR Breakout 2025-02-26
Color HDR Breakout
- Resolved: Remove the sentence in spec that says if sum is zero, treat as invalid; possibly add new prose about splitting the percentage, and update tests (Issue #11678: How should checking for percentages summing to 0 work in dynamic-range-limit-mix() when calc() is used?)
- Resolved: Modify spec text as discussed, to try and flesh out if there are blocking compositor issues in implementations; possibly add an appendix of test cases and blocking issues with platform limitations (Issue #11037: How should multiple layered elements with different `dynamic-range-limit` values behave?)
- The group discussed issue #11704 (Add permission policy (or other mechanism) to irreversibly limit EDR) and what user and author expectations would be. There is a need to dive further into expectations and concerns that this needs to be addressed soon since HDR is starting to ship.
Full Meeting Minutes
Minutes Telecon 2025-02-26
- Resolved: Accept the general approach, change map naming to scale for now, iterate on syntax later (Issue #6245: Interpolate values between breakpoints)
- The group reviewed the proposed solution for issue #11408 (Do collapsed tracks also shrink the table wrapper box or only the table grid box?). The proposal made sense and was in the right direction, but there was a request to think more about handling wrapper and grid box sizes to see if there was a more expected outcome that could be achieved. Discussion will continue on github.
- Resolved: Overflow applies to the wrapper box (Issue #10881: Does `overflow` apply to table-wrapper or table-grid? css-tables contradicts CSSWG resolution)
Full Meeting Minutes
Minutes Telecon 2025-02-19
- Resolved: Publish Snapshot 2024 from the current draft, as a Group Note (Issue #11696: Finish up CSS Snapshot 2024)
- Resolved: block-step-size inherits, and does not activate step sizing (Issue #1902: Inherit block-step-size)
- Resolved: Add a new “none” initial value to block-step-align; all other values turn on step sizing (Issue #1902)
- Resolved: Try option 2 [use the scrollIntoView() position of the non-skipped ancestor of the marker for determining when the marker is active] (Issue #11705: Should ::scroll-marker pseudo-elements within skipped content-visibility: auto elements be discovered?)
- Resolved: Specify this new parsing behavior for all substitution functions, and some sort of spread-like thing (Issue #11500: Short-circuit if() evaluation)
- There wasn’t time to discuss all the questions in issue #11208 (reading-flow and mix of auto-flow and explicit items). The group leaned toward having the ability to set a property which says reading-flow:`stick-with-source-order` to answer the first question.
Full Meeting Minutes
Minutes Sizing Breakout 2025-02-19
CSS Sizing Breakout
- Resolved: Fixed table layout is triggered except when inline-size is auto (Issue #10937: What sizing keywords allow fixed table mode?)
- Resolved: Accept proposal (Issue #11044: How does height: stretch interact with margin collapsing with parent)
- Resolved: See if implementations can match the spec and revisit issue later (Issue #11452: Nobody follows the spec about cyclic percentages in preferred&max sizing properties of replaced element)
- Resolved: min-size: stretch behaves as zero, max-size; stretch as infinity, when in an indefinite container (Issue #11006: Does indefinite `stretch` behave as automatic size or as initial value?)
Full Meeting Minutes
Minutes Color HDR Breakout 2025-02-12
- Resolved: Add current proposal as a note into the spec (Issue #11616: CSS syntax for HDR colors parameterized by headroom)
- Resolved:Change high to no-limit (Issue #11698: New values for dynamic-range-limit property)
- weinig will create a PR to clarify the language called out in issue #11672 (Clarification on the grammar / spec text for `dynamic-range-limit-mix()`)
Full Meeting Minutes
![[Photo: group photo of the CSS working group in San Francisco]](/Style/CSS/csswg-2016.jpg)
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