public-css-archive@w3.org from January 2026 by thread

[csswg-drafts] Pull Request: [selectors] Move column combinator to Selectors 5 Guillaume via GitHub (Saturday, 31 January)

[csswg-drafts] Pull Request: [selectors] Move column combinator to Selectors 5 Guillaume via GitHub (Saturday, 31 January)

Re: [csswg-drafts] [css-borders][css-tables] Which is the outwards direction when listified borders collapse? (#11504) Oriol Brufau via GitHub (Saturday, 31 January)

[csswg-drafts] [web-animations-1] BaseComputedKeyframe should inherit from BaseKeyframe (#13423) Anne van Kesteren via GitHub (Saturday, 31 January)

Closed: [csswg-drafts] [css-anchor-position-1] Interaction between trying position options and CSS transitions (#13048) Tab Atkins Jr. via GitHub (Friday, 30 January)

Re: [csswg-drafts] [css-position-3] Absolute positioning - Is the new inset & auto-size behaviour web-compatible? (#11195) Tab Atkins Jr. via GitHub (Friday, 30 January)

Closed: [csswg-drafts] [css-position-3] Absolute positioning - Is the new inset & auto-size behaviour web-compatible? (#11195) Tab Atkins Jr. via GitHub (Friday, 30 January)

Closed: [csswg-drafts] [css-align] Clarify how `justify-self` affects automatic size of block-level box (#12102) Tab Atkins Jr. via GitHub (Friday, 30 January)

Closed: [csswg-drafts] [css-align] `justify-items` and anonymous block boxes (#11461) Tab Atkins Jr. via GitHub (Friday, 30 January)

Closed: [csswg-drafts] [css-align-3] the `safe flex-start` fallback alignment for `justify-content:space-between` is actually unsafe (#11937) Tab Atkins Jr. via GitHub (Friday, 30 January)

Closed: [csswg-drafts] [css-align-3][css-anchor-position-1] Do we want to allow `safe` or `unsafe` keywords by themselves / in combination with `normal`? (#12920) Tab Atkins Jr. via GitHub (Friday, 30 January)

Closed: [csswg-drafts] [css-anchor-position-1] Clarify how anchor-scope works with display:contents (#12783) Tab Atkins Jr. via GitHub (Friday, 30 January)

Re: [csswg-drafts] [css-anchor-position-1] Use `<anchor-name>` type in `anchor-name` property grammar? (#12895) Tab Atkins Jr. via GitHub (Friday, 30 January)

Closed: [csswg-drafts] [css-anchor-position-1] Use `<anchor-name>` type in `anchor-name` property grammar? (#12895) Tab Atkins Jr. via GitHub (Friday, 30 January)

Closed: [csswg-drafts] [css-anchor-position-1] Back-compat of scrollable containing block for all abspos with implicit anchors (#13067) Tab Atkins Jr. via GitHub (Friday, 30 January)

[csswg-drafts] [css-images] Add a way to set overlay images (#13422) Sebastian Zartner via GitHub (Friday, 30 January)

Closed: [csswg-drafts] [css-mixins-1] Scoped mixins (#13113) Tab Atkins Jr. via GitHub (Friday, 30 January)

[csswg-drafts] Pull Request: [css-values-4] Correct example range in mod function explanation Sebastian Zartner via GitHub (Friday, 30 January)

[csswg-drafts] [css-align] `align-content: baseline` is busted (#13421) Ian Kilpatrick via GitHub (Friday, 30 January)

Closed: [csswg-drafts] [css-view-transitions-2] [scoped] Clarify the ::v-t box and stacking context position relative to the scope (#12324) Steve Kobes (Chromium) via GitHub (Friday, 30 January)

[csswg-drafts] [css-view-transitions-2] [scoped] auto-nesting for self-participating scroller scopes (#13420) Steve Kobes (Chromium) via GitHub (Friday, 30 January)

[csswg-drafts] Pull Request: [css-values-4] Correct example range in mod function explanation Timothy Leverett via GitHub (Friday, 30 January)

Closed: [csswg-drafts] [css-flexbox][css-grid] Unifying grid-auto-flow and flex-flow (#11480) Tab Atkins Jr. via GitHub (Friday, 30 January)

Re: [csswg-drafts] [css-view-transitions-2] Ordering of DOM callbacks when starting multiple view-transitions (#13118) Steve Kobes (Chromium) via GitHub (Friday, 30 January)

Closed: [csswg-drafts] [css-view-transitions-2] Ordering of DOM callbacks when starting multiple view-transitions (#13118) Steve Kobes (Chromium) via GitHub (Friday, 30 January)

Re: [csswg-drafts] [css-animations-2] Should the initial value for animation-duration be auto? (#6530) Antoine Quint via GitHub (Friday, 30 January)

Re: [csswg-drafts] [css-forms-1] Base appearance for image inputs (#12910) Anne van Kesteren via GitHub (Friday, 30 January)

[csswg-drafts] [css-flexbox][css-sizing] Clarify intrinsic size calculation for flex items containing floated descendants with flow-root siblings (#13418) Kinmfer via GitHub (Friday, 30 January)

Re: [csswg-drafts] [css-forms-1] Use visibility for checkmark control? (#13226) Anne van Kesteren via GitHub (Friday, 30 January)

[csswg-drafts] [css-borders][css-tables] The rowspan cell bottom-border takes the color of the last border shared adjacent cell (#13417) Karl Dubost via GitHub (Friday, 30 January)

[csswg-drafts] Pull Request: [css-color-4] Correction to ray trace to avoid throwing off our intersect calculation #10579 Isaac Muse via GitHub (Friday, 30 January)

Re: [csswg-drafts] [css-flexbox-1] Clamp "hypothetical main size" to be non-negative? (#12222) Oriol Brufau via GitHub (Friday, 30 January)

[csswg-drafts] [css-flexbox] Flex lines count (#13414) Tab Atkins Jr. via GitHub (Friday, 30 January)

[csswg-drafts] Pull Request: [css-gaps-1]: Make initial value of interior insets '0' #13137 Sam Davis via GitHub (Thursday, 29 January)

[csswg-drafts] Pull Request: [css-gaps-1]: Make initial value of interior insets '0' #13137 Sam Davis via GitHub (Thursday, 29 January)

Closed: [csswg-drafts] [css-grid-3][masonry] Effect of negative bottom margins on running position + dense-packing (#13164) celestepan via GitHub (Thursday, 29 January)

Re: [csswg-drafts] [css-flexbox][css-grid] Unifying grid-auto-flow and flex-flow (#11480) CSS Meeting Bot via GitHub (Thursday, 29 January)

Re: [csswg-drafts] [css-grid-3][masonry] Handling negative margins and dense packing for baseline calculation in the masonry axis (#13165) CSS Meeting Bot via GitHub (Thursday, 29 January)

Re: [csswg-drafts] [css-grid-3] Should grid-lanes live in the Grid spec, or its own module? (#13115) CSS Meeting Bot via GitHub (Thursday, 29 January)

Re: [csswg-drafts] [css-view-transitions-2] [scoped] When we encounter a tag collision, which transition is skipped? (#12323) Steve Kobes (Chromium) via GitHub (Thursday, 29 January)

Re: [csswg-drafts] [css-view-transitions-2] [scoped] Can a self-participating scope be an outer-transition participant? (#12322) Steve Kobes (Chromium) via GitHub (Thursday, 29 January)

Re: [csswg-drafts] [css-view-transitions-2] [scoped] Choose the name of the API to contain view transition names (#13123) Steve Kobes (Chromium) via GitHub (Thursday, 29 January)

[csswg-drafts] Pull Request: [css-view-transitions-2] Add nested view transition groups spec vmpstr via GitHub (Thursday, 29 January)

Re: [csswg-drafts] [css-view-transitions-2] Allow targeting of the root having an active view-transition of any type (#11152) CSS Meeting Bot via GitHub (Thursday, 29 January)

Re: [csswg-drafts] [css-view-transitions-2] Extend `waitUntil` so that it can delay the start of the View Transition (animating phase) (#13013) CSS Meeting Bot via GitHub (Thursday, 29 January)

Re: [csswg-drafts] [css-mixins-1] Scoped mixins (#13113) Alan Stearns via GitHub (Thursday, 29 January)

[csswg-drafts] [cssom-view-1] Clip aligned element box by intermediate scrollers (#13411) Robert Flack via GitHub (Thursday, 29 January)

Closed: [csswg-drafts] Consider Canonicalization of language tags in :lang() selector maching (#4154) Florian Rivoal via GitHub (Thursday, 29 January)

[csswg-drafts] Pull Request: [selectors-4] Canonicalize into extlang form prior to :lang() matching Florian Rivoal via GitHub (Thursday, 29 January)

Re: [csswg-drafts] [selectors-4] Canonicalize into extlang form prior to :lang() matching (#4212) Florian Rivoal via GitHub (Thursday, 29 January)

Re: [csswg-drafts] [css-view-transitions-1] Can we make the `::view-transition-old` and `::view-transition-new` pseudos “:has-allowed pseudo-element”s? (#12630) vmpstr via GitHub (Thursday, 29 January)

Re: [csswg-drafts] Consider Canonicalization of language tags in :lang() selector maching (#4154) r12a via GitHub (Thursday, 29 January)

Re: [csswg-drafts] [css-multicol] Spanning elements late in the content, treated as column-span: none (#2448) Morten Stenshorne via GitHub (Thursday, 29 January)

Re: [csswg-drafts] [css-multicol] Improve column-fill and make it backward-compatible (#3224) Morten Stenshorne via GitHub (Thursday, 29 January)

Re: [csswg-drafts] [css-cascade][css-syntax] New `!revertable` flag to mark a declaration as "can be reverted when IACVT" (#10443) 一丝 via GitHub (Thursday, 29 January)

Re: [csswg-drafts] [css-borders][css-tables] Which is the outwards direction when listified border collapse? (#11504) Oriol Brufau via GitHub (Thursday, 29 January)

[csswg-drafts] [css-borders][css-tables] Define how listified borders collapse (#13410) Oriol Brufau via GitHub (Thursday, 29 January)

[csswg-drafts] [css-view-transitions-1] WAAPI-created animations on view transition pseudos don’t get cleared when the view transition gets skipped (#13409) Bramus via GitHub (Wednesday, 28 January)

Re: [csswg-drafts] wiki.csswg.org is down (504: Gateway Timeout) (#12143) Chris Lilley via GitHub (Wednesday, 28 January)

Re: [csswg-drafts] [css-cascade-5] Allow authors to explicitly place unlayered styles in the cascade layer order (#6323) Kurt Catti-Schmidt via GitHub (Wednesday, 28 January)

[csswg-drafts] Pull Request: [css-view-transitions-2] Add scoped layout section and update UA stylesheet. Steve Kobes (Chromium) via GitHub (Wednesday, 28 January)

Re: [csswg-drafts] [css-values-5][css-conditional-5] Security Concern: Accelerated Data Exfiltration with attr() and Style Query Ranges (#12410) sb3nder via GitHub (Wednesday, 28 January)

[csswg-drafts] [css-overflow] Understanding the shape of the clip with scrollbar-gutters (#13407) vmpstr via GitHub (Wednesday, 28 January)

Re: [csswg-drafts] [css-sizing] Stretch-fitting inline size next to floats. (#4028) CSS Meeting Bot via GitHub (Wednesday, 28 January)

Re: [csswg-drafts] [css-values] random() function (#2826) Tab Atkins Jr. via GitHub (Wednesday, 28 January)

Re: [csswg-drafts] [css-easing] Allow `steps()` to accept an easing function as the `<step-position>` (#11970) CSS Meeting Bot via GitHub (Wednesday, 28 January)

Re: [csswg-drafts] [css-navigation-1] Simplify `@navigation` matching between two pages, regardless of direction (#13199) CSS Meeting Bot via GitHub (Wednesday, 28 January)

Re: [csswg-drafts] [css-navigation-1] Allow `navigation-param()` to specify whether it should read params from the old/new/current URL (#13179) CSS Meeting Bot via GitHub (Wednesday, 28 January)

[csswg-drafts] [css-tables-3] How table borders should be painted at the corner? (border-collapse: collapse) (#13406) Karl Dubost via GitHub (Wednesday, 28 January)

Re: [csswg-drafts] [css-values] Grammar syntax for defining excluded idents for <custom-ident> productions (#11924) Christoph Päper via GitHub (Wednesday, 28 January)

Re: [csswg-drafts] [css-overflow-4] line-clamp and decoration of interruped boxes (#12809) CSS Meeting Bot via GitHub (Tuesday, 27 January)

Re: [csswg-drafts] [css-forms-1] control-value() security and handling (#11860) sb3nder via GitHub (Tuesday, 27 January)

Re: [csswg-drafts] [css-overflow] Behavior of the line-clamp ellipsis after hanging glyphs (#12857) CSS Meeting Bot via GitHub (Tuesday, 27 January)

Re: [csswg-drafts] [css-overflow-4] where to clamp when a float pushes a whole line down (#12817) CSS Meeting Bot via GitHub (Tuesday, 27 January)

Re: [csswg-drafts] [css-overflow-4] Confirm edit about IFCs and block ellipsis (#12826) CSS Meeting Bot via GitHub (Tuesday, 27 January)

Re: [csswg-drafts] [css-overflow] Bidi handling for text-overflow and line-clamp ellipses (#12617) CSS Meeting Bot via GitHub (Tuesday, 27 January)

Re: [csswg-drafts] [css-overflow-4] Should block-ellipsis clip ::before/::after text? (#11253) CSS Meeting Bot via GitHub (Tuesday, 27 January)

Re: [csswg-drafts] [css-values-5] Can ident() bypass dashed-ident requirements? (#12206) Lea Verou via GitHub (Tuesday, 27 January)

Re: [csswg-drafts] [css-values-5] Behavior of ident() in at-rule preludes (#12219) Lea Verou via GitHub (Tuesday, 27 January)

Re: [csswg-drafts] [css-color-4] Clarify that `none` is preserved in calculations (#10211) CSS Meeting Bot via GitHub (Tuesday, 27 January)

[csswg-drafts] [css-forms-1] Should `::checkmark` be allowed in appearance none? (#13405) Luke Warlow via GitHub (Tuesday, 27 January)

Re: [csswg-drafts] [css-values] Provide functions for resolving relative units based on type (#12488) Miriam Suzanne via GitHub (Tuesday, 27 January)

Re: [csswg-drafts] [css-text-decor] add text-decoration-offset (#12301) Danny Smith via GitHub (Tuesday, 27 January)

Re: [csswg-drafts] [css-values-5] The `<random-value-sharing>` options for `random()` are confusing (#13132) Tab Atkins Jr. via GitHub (Tuesday, 27 January)

Re: [csswg-drafts] [selectors] Add pseudo-classes for `<select>` being a drop-down box vs a list box (#7422) Luke Warlow via GitHub (Tuesday, 27 January)

Closed: [csswg-drafts] [css-forms-1] Should `appearance: base-select` work on listbox selects? (`<select size>`/`<select multiple>`) (#12468) Luke Warlow via GitHub (Tuesday, 27 January)

Re: [csswg-drafts] [css-forms-1] Should `appearance: base-select` work on listbox selects? (`<select size>`/`<select multiple>`) (#12468) Luke Warlow via GitHub (Tuesday, 27 January)

Re: [csswg-drafts] [css2][css-tables] Cells spanning collapsed track (#11799) Karl Dubost via GitHub (Tuesday, 27 January)

Closed: [csswg-drafts] [css-forms-1] UA styles for base appearance listbox select elements (#12510) Luke Warlow via GitHub (Tuesday, 27 January)

Re: [csswg-drafts] [css-forms-1] UA styles for base appearance listbox select elements (#12510) Luke Warlow via GitHub (Tuesday, 27 January)

Re: [csswg-drafts] [css-sizing] How to shrink to fit the width? (#191) Roman Komarov via GitHub (Tuesday, 27 January)

[csswg-drafts] Pull Request: adds the `window-drag` text to the css-ui-4 spec Diego Gonzalez via GitHub (Tuesday, 27 January)

Re: [csswg-drafts] [css-backgrounds] Always serialize 'background-size' and `mask-size` as two values (#7802) Noam Rosenthal via GitHub (Tuesday, 27 January)

[csswg-drafts] [css-forms-1] Radio buttons should have padding (#13403) Luke Warlow via GitHub (Tuesday, 27 January)

[csswg-drafts] [css-speech-1] Useful values to drive TTS engines (#13402) Laurence ZAYSSER via GitHub (Tuesday, 27 January)

Re: [csswg-drafts] [css-fonts-5] Feature for making text always fit the width of its parent (#2528) TAMURA, Kent via GitHub (Tuesday, 27 January)

[csswg-drafts] [css-forms-1] Specify behaviour of readonly and disabled temporal inputs (#13401) Luke Warlow via GitHub (Tuesday, 27 January)

Re: [csswg-drafts] [css-forms-1] Have 2 slider-fill pseudos? (upper vs lower slider fills) (#12419) fantasai via GitHub (Tuesday, 27 January)

Re: [csswg-drafts] [css-forms-1] Checkbox stylesheet missing indeterminate handling (#11869) fantasai via GitHub (Tuesday, 27 January)

Re: [csswg-drafts] [css-grid-3][masonry] Effect of negative bottom margins on running position + dense-packing (#13164) Alison Maher via GitHub (Monday, 26 January)

Re: [csswg-drafts] [css-forms-1] Checkbox and radio sizing should meet WCAG minimum sizing (#12430) fantasai via GitHub (Monday, 26 January)

[csswg-drafts] [css-forms-1] Which form controls does ::field-text apply to? (#13400) fantasai via GitHub (Monday, 26 January)

Re: [csswg-drafts] [css-forms-1] Text input pseudo definitions too entangled with HTML (#12950) fantasai via GitHub (Monday, 26 January)

Re: [csswg-drafts] [css-forms-1] Define range slider datalist integration (#12963) fantasai via GitHub (Monday, 26 January)

[csswg-drafts] Pull Request: [css-spec-shortname-1] Preventing User Dictionary Leaks via ::spelling-error and ::grammar-error Performance Impacts Ari Chivukula via GitHub (Monday, 26 January)

[csswg-drafts] Need for detecting the typical viewing distance in media queries (#13398) 張俊芝 via GitHub (Monday, 26 January)

[csswg-drafts] Pull Request: [css-view-transitions-2]: update visibility vs opacity wording vmpstr via GitHub (Monday, 26 January)

Closed: [csswg-drafts] [css-view-transition-1] `visibility: hidden` analogy is misleading, elements remain keyboard-focusable and accessible (#12629) vmpstr via GitHub (Monday, 26 January)

Re: [csswg-drafts] [css-animations] Serialize all keyframe names as strings (#2435) Guillaume via GitHub (Monday, 26 January)

Re: [csswg-drafts] [css-scoping] Allow elements to expose a subset of their shadow tree, which can then be styled with regular CSS (#10939) Jenna Smith via GitHub (Monday, 26 January)

[csswg-drafts] New needs for new goals (#13396) Laurence ZAYSSER via GitHub (Monday, 26 January)

Re: [csswg-drafts] [css-mediaqueries] expose user left/right hand preference (#4443) George Gooding via GitHub (Sunday, 25 January)

[csswg-drafts] [meta][css-2026] List of suggested extensions to CSS (#13395) Christoph Päper via GitHub (Sunday, 25 January)

Re: [csswg-drafts] [css-values-4] Clarification on how non-calc() math functions serialize as specified values when nested in calc. (#12059) Sam Weinig via GitHub (Sunday, 25 January)

Re: [csswg-drafts] [cssom] Window.getComputedStyle IDL should return a CSSStyleProperties rather than a CSSStyleDeclaration (#11958) Sam Weinig via GitHub (Sunday, 25 January)

Closed: [csswg-drafts] [cssom] Window.getComputedStyle IDL should return a CSSStyleProperties rather than a CSSStyleDeclaration (#11958) Sam Weinig via GitHub (Sunday, 25 January)

[csswg-drafts] [css-mixins] FunctionParameter dictionary should not have any required members (#13394) Sam Weinig via GitHub (Sunday, 25 January)

[csswg-drafts] [css-values] Introduce Exceptions to Productions in Value Definition Syntax (#13393) Christoph Päper via GitHub (Sunday, 25 January)

Re: [csswg-drafts] [css-viewport] Use ASCII whitespace (#8757) Anne van Kesteren via GitHub (Sunday, 25 January)

Re: [csswg-drafts] [css-fonts] Rename `<*-family-name>` to `<*-font-family-name>`? (#13263) Christoph Päper via GitHub (Sunday, 25 January)

Re: [csswg-drafts] [css-values] Proposal: new `presentational` global value to revert a property to use presentational hints if any, otherwise behave like `revert` (#13213) Romain Menke via GitHub (Sunday, 25 January)

Re: [csswg-drafts] [css-typed-om] CSS Typed OM is no faster than using strings and style attribute, no incentive to switch to CSS Typed OM (#11567) Joe Pea via GitHub (Sunday, 25 January)

Re: [csswg-drafts] [mediaqueries-5] Incomplete list of changes wrt level 4 (#10864) Sebastian Zartner via GitHub (Sunday, 25 January)

[csswg-drafts] [mediaqueries-4] Steps to Recommendation (#13392) Sebastian Zartner via GitHub (Saturday, 24 January)

[csswg-drafts] [css-cascade] Allow making a scope's upper bound really inclusive (check nested selectors against it) (#13391) Benoît Rouleau via GitHub (Saturday, 24 January)

Re: [csswg-drafts] [css-cascade] Can we use `@scope` for style isolation? (#11002) Benoît Rouleau via GitHub (Saturday, 24 January)

Re: [csswg-drafts] [css-grid-3][Masonry] Intrinsic auto repeats mixed with fixed tracks (#12899) Alison Maher via GitHub (Saturday, 24 January)

Re: [csswg-drafts] [css-backgrounds-4] Decide on name for shorthand covering everything `background-*` except `background-color` (#9083) Tab Atkins Jr. via GitHub (Friday, 23 January)

Re: [csswg-drafts] [css-overflow-4] max-lines and independent formatting contexts (#12962) Tab Atkins Jr. via GitHub (Friday, 23 January)

Re: [csswg-drafts] [css-grid-2] Aspect ratio and the row axis (#12964) Tab Atkins Jr. via GitHub (Friday, 23 January)

Re: [csswg-drafts] Is <attr-unit> parse-time behavior intentional? (#13060) Tab Atkins Jr. via GitHub (Friday, 23 January)

Re: [csswg-drafts] [css-overflow-4] overflow-clip-margin's omitted default box (#13185) fantasai via GitHub (Friday, 23 January)

Re: [csswg-drafts] [css-overflow] Should overflow: clip work on inline boxes? (#13257) fantasai via GitHub (Friday, 23 January)

Re: [csswg-drafts] [css-anchor-position] Clarification: effect of `position-try-fallbacks` and `position-try-order` when the positioned box does not overflow (#13268) Tab Atkins Jr. via GitHub (Friday, 23 January)

Re: [csswg-drafts] [css-sizing] Intrinsic sizes for stretchable replaced elements (#13149) Tab Atkins Jr. via GitHub (Friday, 23 January)

Re: [csswg-drafts] [css-color] Clarification needed on how missing alpha components flow through relative color syntax for hsl/hwb (#10254) Chris Lilley via GitHub (Friday, 23 January)

Re: [csswg-drafts] [css-color-4] parsed-value-time lightness clamping (#11549) Chris Lilley via GitHub (Friday, 23 January)

Re: [csswg-drafts] [css-color] Eager evaluation of calc() for specified value serialization of non-rgb() colors (#10830) Chris Lilley via GitHub (Friday, 23 January)

Closed: [csswg-drafts] [css-color] Eager evaluation of calc() for specified value serialization of non-rgb() colors (#10830) Chris Lilley via GitHub (Friday, 23 January)

Closed: [csswg-drafts] [css-animations] Clarify whether `<keyframes-name>` supports the empty string (#7762) Tab Atkins Jr. via GitHub (Friday, 23 January)

Re: [csswg-drafts] Do we need :focus-visible-within ? (#3080) sb3nder via GitHub (Friday, 23 January)

[csswg-drafts] Pull Request: [css-view-transitions-2] Spec view-transition-scope vmpstr via GitHub (Friday, 23 January)

Closed: [csswg-drafts] [css-mixins-1] Do we really need the `@contents` parameter? (#12946) Tab Atkins Jr. via GitHub (Friday, 23 January)

Closed: [csswg-drafts] [selectors‑4] Hovering a top‑layer pseudo‑element, `body:has(:hover)` doesn't match (#13153) sb3nder via GitHub (Friday, 23 January)

Re: [csswg-drafts] [selectors‑4] Hovering a top‑layer pseudo‑element, `body:has(:hover)` doesn't match (#13153) sb3nder via GitHub (Friday, 23 January)

Re: [csswg-drafts] `::selection`, `::target-text`, `::highlight`, `::spelling-error`, `::grammar-error` style should propagate across shadow boundaries (#12497) smaug---- via GitHub (Friday, 23 January)

[csswg-drafts] [meta] `…-name` variants and `<custom-ident>` vs. `<dashed-ident>` (#13389) Christoph Päper via GitHub (Friday, 23 January)

Re: [csswg-drafts] [cssom] location should be a URL (#9316) Gordon P. Hemsley via GitHub (Friday, 23 January)

[csswg-drafts] [css-overflow-5] overflow-clip-margin: content-box should not apply border radius to the content box. (#13388) Robert Flack via GitHub (Friday, 23 January)

[csswg-drafts] [css-conditional][css-transitions-2] Add an @supports keyword for support of transition-behavior for all properties (#13387) Sebastian Zartner via GitHub (Friday, 23 January)

[csswg-drafts] Pull Request: [cssom-1] Append only one newline in @media rule block Guillaume via GitHub (Friday, 23 January)

[csswg-drafts] Pull Request: [cssom-1] Append only one newline in @media rule block Guillaume via GitHub (Friday, 23 January)

[csswg-drafts] [css filters] Editorial: Github issues should be linked to the CSS issues not fxtf-drafts (#13385) Karl Dubost via GitHub (Thursday, 22 January)

[csswg-drafts] [css filters] supported values for the "in" attribute (#13384) Karl Dubost via GitHub (Thursday, 22 January)

Re: [csswg-drafts] Define rec2020 color space to use 2.4 gamma (#12574) Chris Lilley via GitHub (Thursday, 22 January)

Closed: [csswg-drafts] Define rec2020 color space to use 2.4 gamma (#12574) Chris Lilley via GitHub (Thursday, 22 January)

Re: [csswg-drafts] [cssom] Should new rules serialize fully on a single line? (#12959) Guillaume via GitHub (Thursday, 22 January)

[csswg-drafts] [css-forms] option hover/active styles inside of disabled select listbox (#13383) Luke Warlow via GitHub (Thursday, 22 January)

Re: [csswg-drafts] [css-grid-3] Masonry Switch Syntax (#12022) Chris J. Zähller via GitHub (Thursday, 22 January)

[csswg-drafts] Pull Request: [css-sizing-4] Fix typo in responsively-sized iframes Koji Ishii via GitHub (Thursday, 22 January)

Re: [csswg-drafts] [css-forms-1] Should new pseudo-elements be restricted to base appearance mode? (#12365) CSS Meeting Bot via GitHub (Thursday, 22 January)

Re: [csswg-drafts] [css-color-4] Evaluate static gamut mapping algorithms for oklab/oklch spaces (#10579) Chris Lilley via GitHub (Thursday, 22 January)

[csswg-drafts] [css-highlight-api] Use marker nodes to declaratively annotate highlights (#13381) Noam Rosenthal via GitHub (Thursday, 22 January)

[csswg-drafts] Pull Request: [filter-effects-1][editorial] Fix syntax of filter-function type Sebastian Zartner via GitHub (Thursday, 22 January)

[csswg-drafts] Pull Request: [filter-effects-1][editorial] Fix syntax of filter-function type Sebastian Zartner via GitHub (Thursday, 22 January)

[csswg-drafts] Pull Request: [filter-effects-1] Fix syntax of filter-function type François Daoust via GitHub (Thursday, 22 January)

[csswg-drafts] [css-view-transitions-2] Figuring out whether a ViewTransition was skipped or not, is not possible (#13379) Bramus via GitHub (Thursday, 22 January)

Re: [csswg-drafts] [css-gaps-1] Clarify if space from content distribution properties consititues a "gutter" for decoration purposes. (#12922) Kevin Babbitt via GitHub (Thursday, 22 January)

Re: [csswg-drafts] Multiple stylesheets per file (#5629) Justin Fagnani via GitHub (Wednesday, 21 January)

Re: [csswg-drafts] [css-navigation-1] :link-to() pseudo-class for links that are related to the current navigation (#13163) L. David Baron via GitHub (Wednesday, 21 January)

Re: [csswg-drafts] [css-position-4] Consider removing the overlay property (#13200) L. David Baron via GitHub (Wednesday, 21 January)

[csswg-drafts] Pull Request: [css-view-transition-1][editorial] Change `visibility: hidden` analogy to `opacity: 0` sb3nder via GitHub (Wednesday, 21 January)

Re: [csswg-drafts] Define possibly inheritable behaviour for `app-region` (now `window-drag`) (#13101) CSS Meeting Bot via GitHub (Wednesday, 21 January)

Re: [csswg-drafts] [css-view-transition-1] `visibility: hidden` analogy is misleading, elements remain keyboard-focusable and accessible (#12629) CSS Meeting Bot via GitHub (Wednesday, 21 January)

Re: [csswg-drafts] [css-view-transitions-2] Revisiting view-transition-name: auto keyword name (#12091) CSS Meeting Bot via GitHub (Wednesday, 21 January)

[csswg-drafts] [mediaqueries] Effect of <meta name=color-scheme> on img and video sources (#13377) Josh Tumath via GitHub (Wednesday, 21 January)

Re: [csswg-drafts] [css-anchor-position-1] `::placeholder` being an acceptable anchor exposes UA implementation details (#12949) Roman Komarov via GitHub (Wednesday, 21 January)

Re: [csswg-drafts] [css-align-3][css-anchor-position-1] Do we want to allow `safe` or `unsafe` keywords by themselves / in combination with `normal`? (#12920) CSS Meeting Bot via GitHub (Wednesday, 21 January)

Re: [csswg-drafts] [css-anchor-position-1] Clarify how anchor-scope works with display:contents (#12783) Emilio Cobos Álvarez via GitHub (Wednesday, 21 January)

Closed: [csswg-drafts] [css-anchor-position] position-area specified vs. computed value is weird (#12759) fantasai via GitHub (Wednesday, 21 January)

Re: [csswg-drafts] [css-anchor-position] position-area specified vs. computed value is weird (#12759) CSS Meeting Bot via GitHub (Wednesday, 21 January)

Re: [csswg-drafts] [scroll-animations-1] Range for entire scroll range (#9367) Bramus via GitHub (Wednesday, 21 January)

Closed: [csswg-drafts] [scroll-animations-1] Range for entire scroll range (#9367) Bramus via GitHub (Wednesday, 21 January)

Re: [csswg-drafts] [css-anchor-position] Anchor Element's "Containing Block" (#12674) CSS Meeting Bot via GitHub (Wednesday, 21 January)

Re: [csswg-drafts] [css-grid] Grid Item Position Transitions (#6736) Bramus via GitHub (Wednesday, 21 January)

Closed: [csswg-drafts] [css-grid] Grid Item Position Transitions (#6736) Bramus via GitHub (Wednesday, 21 January)

Re: [csswg-drafts] [css-anchor-position-1] Back-compat of scrollable containing block for all abspos with implicit anchors (#13067) CSS Meeting Bot via GitHub (Wednesday, 21 January)

[csswg-drafts] [css-highlights] Highlight cascade behavior for shadows is rather unfortunate. (#13376) Emilio Cobos Álvarez via GitHub (Wednesday, 21 January)

Re: [csswg-drafts] [css-fonts-5]: define text-scale, legacy/scale keywords, env(preferred-text-scale) (#12469) Keith Cirkel via GitHub (Wednesday, 21 January)

Re: [csswg-drafts] [css-mixins-1] Should we be more explicit about the result? (@result) (#13138) andruud via GitHub (Wednesday, 21 January)

Re: [csswg-drafts] [mediaqueries-5][css-conditional-5][css-mixins-1] Order dependent rules and adopted stylesheets (#13041) Emilio Cobos Álvarez via GitHub (Wednesday, 21 January)

[csswg-drafts] [css-highlight-api][css-pseudo] Highlight Types (#13375) Christoph Päper via GitHub (Wednesday, 21 January)

Re: [csswg-drafts] [css-sizing] Should `contain-intrinsic-*: from-element` require `contain:size`? (#13182) Koji Ishii via GitHub (Wednesday, 21 January)

[csswg-drafts] Pull Request: [css-gaps-1]: Add section for rule visibility items # 12602 Sam Davis via GitHub (Tuesday, 20 January)

[csswg-drafts] Pull Request: [css-gaps-1]: Add section for rule visibility items # 12602 Sam Davis via GitHub (Tuesday, 20 January)

Re: [csswg-drafts] [css-images] Disabling image animation (#1615) Florian Rivoal via GitHub (Tuesday, 20 January)

Re: [csswg-drafts] [css-flexbox-2] Add flex-wrap: balance; (#3070) Ian Kilpatrick via GitHub (Tuesday, 20 January)

[csswg-drafts] [css-view-transitions-2] ::v-t-old and ::v-t-new should be display:block (#13373) Steve Kobes (Chromium) via GitHub (Tuesday, 20 January)

Re: [csswg-drafts] [selectors-4] Move to CR? (#12799) Chris Lilley via GitHub (Tuesday, 20 January)

[csswg-drafts] [css-anchor-position-1] Accessibility implications section (#13372) ehind67 via GitHub (Tuesday, 20 January)

[csswg-drafts] [css-borders-4] Should `border-shape` imply scrollable or ink overflow? (#13371) Daniil Sakhapov via GitHub (Tuesday, 20 January)

[csswg-drafts] Pull Request: [css-writing-modes-3] Fix introduction id Sebastian Zartner via GitHub (Tuesday, 20 January)

[csswg-drafts] Pull Request: [css-writing-modes-4] Fix introduction id Sebastian Zartner via GitHub (Tuesday, 20 January)

[csswg-drafts] [css-overscroll-1] Add an overscroll-behavior value which disables local boundary default actions (#13370) vmpstr via GitHub (Monday, 19 January)

Re: [csswg-drafts] [css-gaps-1] Gap intersections for multicol containers (#12784) Kevin Babbitt via GitHub (Monday, 19 January)

Re: [csswg-drafts] [css-gaps-1] Allow row decoration breaks in Multicol (with column-wrap) (#13135) Kevin Babbitt via GitHub (Monday, 19 January)

Re: [csswg-drafts] [css-gaps-1] Introduction of `auto` for `rule-break` properties. (#13127) Kevin Babbitt via GitHub (Monday, 19 January)

[csswg-drafts] [css-text-4] Recommend applying `text-spacing: none` to additional preformatted elements in the default stylesheet (#13369) jfkthame via GitHub (Monday, 19 January)

Closed: [csswg-drafts] [mediaqueries-5] Multiple Privacy / Security sections (#10924) Sebastian Zartner via GitHub (Monday, 19 January)

Re: [csswg-drafts] [mediaqueries-5] Multiple Privacy / Security sections (#10924) Sebastian Zartner via GitHub (Monday, 19 January)

[csswg-drafts] [css-selectors-5] Proposal: `:capture()` and `:group()` functional pseudo-classes (#13368) rokke via GitHub (Monday, 19 January)

[csswg-drafts] Pull Request: [web-animations-2] Replace incorrect references to `iteration duration` with `specified iteration duration` Sebastian Zartner via GitHub (Monday, 19 January)

[csswg-drafts] Pull Request: [css-regions-1] Fix urls consistently Sebastian Zartner via GitHub (Sunday, 18 January)

[csswg-drafts] Support for building an optimal, nested CSSStylesheet programmatically (#13367) Bruce B. Anderson via GitHub (Sunday, 18 January)

[csswg-drafts] [css-gaps-1] Gap Intersection Points -> Segment Endpoints (#13366) Kevin Babbitt via GitHub (Saturday, 17 January)

[csswg-drafts] [css-gaps-1] Seek wide review (#13365) Kevin Babbitt via GitHub (Saturday, 17 January)

[csswg-drafts] [css-anchor-position-1][css-animations-2][scroll-animations-1] Fix name visibility for descendants (#13364) Robert Flack via GitHub (Friday, 16 January)

[csswg-drafts] Pull Request: [css-regions-1] Fix urls consistently Dmitry Statsenko via GitHub (Friday, 16 January)

[csswg-drafts] [css-gaps-1]: Suppression of gaps/gutters across fragment breaks with Spanning Item (#13362) Sam Davis via GitHub (Friday, 16 January)

Re: [csswg-drafts] [css-grid-3][masonry] item-flow row vs. column in masonry layouts (#12803) Alison Maher via GitHub (Friday, 16 January)

[csswg-drafts] Pull Request: [css-borders-4] Brush the border shape property spec text Daniil Sakhapov via GitHub (Friday, 16 January)

Re: [csswg-drafts] [scroll-animations-1] Clarify "Computed value" of scroll/view-timeline-name (#13231) andruud via GitHub (Friday, 16 January)

Re: [csswg-drafts] CSS WG drafts server (#12054) Sebastian Zartner via GitHub (Friday, 16 January)

[csswg-drafts] [css-shadow] Confusing spec naming (#13360) Christoph Päper via GitHub (Friday, 16 January)

[csswg-drafts] Pull Request: [css-forms-1] Add checkmark content for indeterminate checkbox. Luke Warlow via GitHub (Friday, 16 January)

[csswg-drafts] Pull Request: [css-gaps-1][editorial] Simplify syntax Guillaume via GitHub (Friday, 16 January)

[csswg-drafts] Pull Request: [css-gaps-1][editorial] Simplify syntax Guillaume via GitHub (Friday, 16 January)

[csswg-drafts] Pull Request: [css-forms-1] Add checkmark content for indeterminate checkbox. Luke Warlow via GitHub (Friday, 16 January)

[csswg-drafts] Pull Request: [css-forms-1] Add missing content property to radio checkmark Luke Warlow via GitHub (Friday, 16 January)

[csswg-drafts] Pull Request: [css-forms-1] Add missing content property to radio checkmark Luke Warlow via GitHub (Friday, 16 January)

Re: [csswg-drafts] [css-anchor] Allow anchoring to pointer (#8639) Zacky Ma via GitHub (Friday, 16 January)

[csswg-drafts] Pull Request: [css-forms-1] Increase specificity of UA style selectors Luke Warlow via GitHub (Thursday, 15 January)

[csswg-drafts] Pull Request: [css-forms-1] Increase specificity of UA style selectors Luke Warlow via GitHub (Thursday, 15 January)

Re: [csswg-drafts] [css-forms-1] Rework default styles for slider-like controls (#12267) fantasai via GitHub (Thursday, 15 January)

Re: [csswg-drafts] [css-forms-1] border radius on form controls (feedback) (#13124) fantasai via GitHub (Thursday, 15 January)

[csswg-drafts] [css-forms-1] ::field-component and ::field-separator should be children of ::field-text (#13355) fantasai via GitHub (Thursday, 15 January)

Re: [csswg-drafts] [css-view-transitions-2] [scoped] Should the scope be self-participating by default? (#12320) Steve Kobes (Chromium) via GitHub (Thursday, 15 January)

Closed: [csswg-drafts] [css-view-transitions-2] [scoped] Should the scope be self-participating by default? (#12320) Steve Kobes (Chromium) via GitHub (Thursday, 15 January)

Re: [csswg-drafts] [css-view-transitions-2] [scoped] Should the scope have contain:v-t by default? (#12321) Steve Kobes (Chromium) via GitHub (Thursday, 15 January)

Closed: [csswg-drafts] [css-view-transitions-2] [scoped] Should the scope have contain:v-t by default? (#12321) Steve Kobes (Chromium) via GitHub (Thursday, 15 January)

Re: [csswg-drafts] [css-view-transitions-2] [scoped] Allow self-participating scopes? (#12319) Steve Kobes (Chromium) via GitHub (Thursday, 15 January)

Closed: [csswg-drafts] [css-view-transitions-2] [scoped] Allow self-participating scopes? (#12319) Steve Kobes (Chromium) via GitHub (Thursday, 15 January)

Re: [csswg-drafts] [css-grid-3] orthogonal item overflow in a row masonry (#13116) Alison Maher via GitHub (Thursday, 15 January)

Closed: [csswg-drafts] [css-gaps-1] Serializing `column-rule` shorthand from separate longhands (#12201) Kevin Babbitt via GitHub (Thursday, 15 January)

Re: [csswg-drafts] [css-conditional] testing support of properties and values with partial implementations (#3559) fantasai via GitHub (Thursday, 15 January)

Re: [csswg-drafts] [cssom] Properties that allow access to parsed-but-invalid syntactic constructs (declarations, rules, etc) as a low-fi way to make polyfills easier (#13186) Ra via GitHub (Thursday, 15 January)

Re: [csswg-drafts] [css-view-transitions-2] [scoped] Clarify the ::v-t box and stacking context position relative to the scope (#12324) Bramus via GitHub (Thursday, 15 January)

[csswg-drafts] Pull Request: WIP: [css-2026] Added features resolved on on Jan 15 #13332 Sebastian Zartner via GitHub (Thursday, 15 January)

[csswg-drafts] Pull Request: WIP: [css-2026] Added features resolved on on Jan 15 #13332 Sebastian Zartner via GitHub (Thursday, 15 January)

Re: [csswg-drafts] [css-scrollbars] Force render scrollbar thumb of overlay scrollbars (#9785) Bramus via GitHub (Thursday, 15 January)

Closed: [csswg-drafts] [css-scrollbars] Force render scrollbar thumb of overlay scrollbars (#9785) Bramus via GitHub (Thursday, 15 January)

Closed: [csswg-drafts] [mediaqueries] Scroll bar type query (#7697) Bramus via GitHub (Thursday, 15 January)

Re: [csswg-drafts] [css-page] Expose unprintable areas via CSS (#11395) Morten Stenshorne via GitHub (Thursday, 15 January)

Re: [csswg-drafts] [mediaqueries] Scroll bar type query (#7697) Bramus via GitHub (Thursday, 15 January)

[csswg-drafts] [css-anchor-1] Clarify the expected behavior of anchor-center with scrollable containers (#13353) Devon Govett via GitHub (Thursday, 15 January)

Re: [csswg-drafts] [css-writing-modes-4] Fix introduction id (#10663) Sebastian Zartner via GitHub (Wednesday, 14 January)

Re: [csswg-drafts] [css-writing-modes-3] Fix introduction id (#10662) W3C Bot via GitHub (Wednesday, 14 January)

[csswg-drafts] Pull Request: [css-size-adjust-1] Fix inconsistency aliases Sebastian Zartner via GitHub (Wednesday, 14 January)

Re: [csswg-drafts] [css-size-adjust-1] Fix inconsistency aliases (#10659) W3C Bot via GitHub (Wednesday, 14 January)

[csswg-drafts] Pull Request: [css-regions-1] Fix inconsistency aliases Sebastian Zartner via GitHub (Wednesday, 14 January)

Re: [csswg-drafts] [css-regions-1] Fix inconsistency aliases (#10656) Sebastian Zartner via GitHub (Wednesday, 14 January)

[csswg-drafts] [css-anchor-position] Anchor Recalculation Point + Initial Load (#13352) dshin-moz via GitHub (Wednesday, 14 January)

[csswg-drafts] Pull Request: [css-forms] Remove redundant ToC entry Florian Rivoal via GitHub (Wednesday, 14 January)

[csswg-drafts] Pull Request: [css-pseudo] Describe `.pseudoTarget` property for `CSSPseudoElement` #12163 Daniil Sakhapov via GitHub (Wednesday, 14 January)

Re: [csswg-drafts] [css-transitions-2][css-animations-2] The event order of the cancelled transitions/animations (#11064) L. David Baron via GitHub (Wednesday, 14 January)

Re: [csswg-drafts] [css-borders] Add a 'hairline' border-width value (#3720) CSS Meeting Bot via GitHub (Wednesday, 14 January)

[csswg-drafts] [css-border][css-viewport] Consider moving border-width pixel snapping from computed value to used value (#13350) Sam Weinig via GitHub (Wednesday, 14 January)

[csswg-drafts] [css-ui] Disentangle `outline-style` from the `outline-color` computed style (#13349) Sam Weinig via GitHub (Wednesday, 14 January)

Re: [csswg-drafts] [css-2026][selectors-4] Add features from Selectors 4 to Safe to Release Exceptions (#12797) CSS Meeting Bot via GitHub (Wednesday, 14 January)

[csswg-drafts] Proposal: CSS Object Variables with Dot Notation (#13348) Matt Morgan via GitHub (Wednesday, 14 January)

[csswg-drafts] Pull Request: [css-forms] Remove redundant ToC entry Florian Rivoal via GitHub (Wednesday, 14 January)

[csswg-drafts] Pull Request: [css-forms] Remove redundant ToC entry Florian Rivoal via GitHub (Wednesday, 14 January)

Re: [csswg-drafts] [css-2026][css-transitions-2] Add `transition-behavior`, `@starting-style`, and `CSSStartingStyleRule` to Safe to Release exceptions (#12778) CSS Meeting Bot via GitHub (Wednesday, 14 January)

Re: [csswg-drafts] [css-2026][css-env-1] Add `env(safe-area-inset-*)` to Safe to Release exceptions (#12780) CSS Meeting Bot via GitHub (Wednesday, 14 January)

Re: [csswg-drafts] [css-2026][css-ui-4] Add `accent-color` property, `auto` value for `outline-color`, and `<url-set>` value for `cursor` to Safe to Release exceptions (#12781) CSS Meeting Bot via GitHub (Wednesday, 14 January)

Re: [csswg-drafts] [css-2026][css-inline-3] Add `text-box-trim` and `text-box-edge` to Safe to Release exceptions (#12782) CSS Meeting Bot via GitHub (Wednesday, 14 January)

Re: [csswg-drafts] [cssom-view] Should `scrollParent` allow axis filtering? (#12731) Robert Flack via GitHub (Wednesday, 14 January)

[csswg-drafts] [css-pseudo] Add `::scroll-marker` and `::scroll-button` to the `CSSPseudoElement`'s allowed pseudo-elements list (#13346) Daniil Sakhapov via GitHub (Wednesday, 14 January)

Re: [csswg-drafts] [css-contain] Similar to window.matchMedia(), Container Queries should have a similar method (#6205) basher via GitHub (Wednesday, 14 January)

Re: [csswg-drafts] [cssom] Shortest serialization principle with multiple minimal possibilities (#8155) Sebastian Zartner via GitHub (Wednesday, 14 January)

Re: [csswg-drafts] [css-anchor-position-1] Reusing the implicit anchor name on the nested elements (#8913) Jake Archibald via GitHub (Wednesday, 14 January)

[csswg-drafts] [css-pseudo-elements] Extending the scope of `::placeholder` (#13345) Christoph Päper via GitHub (Wednesday, 14 January)

Re: [csswg-drafts] [css-overflow-5] Allow controlling scroll axis locking behavior (#13207) Nick Coury via GitHub (Tuesday, 13 January)

[csswg-drafts] Pull Request: [css-navigation-1][editorial] Refactor <navigation-condition> definition Guillaume via GitHub (Tuesday, 13 January)

[csswg-drafts] Compat (not sure what spec) setting `.style.border` to `"none"` sets it to `"medium"` (#13343) Psychpsyo (Cameron) via GitHub (Tuesday, 13 January)

[csswg-drafts] Pull Request: [css-style-attr] Fix typo Psychpsyo (Cameron) via GitHub (Tuesday, 13 January)

[csswg-drafts] Pull Request: [css-ruby-1][editorial] Flag "New values" tables for display property as informative (again) Guillaume via GitHub (Tuesday, 13 January)

[csswg-drafts] Pull Request: [css-ruby-1][editorial] Flag "New values" tables for display property as informative (again) Guillaume via GitHub (Tuesday, 13 January)

[csswg-drafts] [meta] Context-sensitive function definitions (#13340) Guillaume via GitHub (Tuesday, 13 January)

[csswg-drafts] [css-fonts] Remove `font-width` in favor of `font-stretch` (#13339) Claas Augner via GitHub (Tuesday, 13 January)

[csswg-drafts] Pull Request: [css-color-4] Fix discrepency in ΔE2000 sample implementation (#13322) initramfs via GitHub (Monday, 12 January)

[csswg-drafts] [css-valuies-5] What order to use for the "index of usage" for the default random() keys? (#13337) Tab Atkins Jr. via GitHub (Monday, 12 January)

[csswg-drafts] Pull Request: [css-gaps-1]: Add section for serializing column-rule shorthand and update separator of longhands #12201 Sam Davis via GitHub (Monday, 12 January)

[csswg-drafts] Pull Request: [css-gaps-1]: Add section for serializing column-rule shorthand and update separator of longhands #12201 Sam Davis via GitHub (Monday, 12 January)

[csswg-drafts] [css-text-decor][css-lists][css-counter-styles] `text-emphasis` is similar to (symbolic) counters (#13335) Christoph Päper via GitHub (Monday, 12 January)

[csswg-drafts] Syntactic sugar for variables (#13334) flachware via GitHub (Monday, 12 January)

[csswg-drafts] [css-shadow-1][editorial] Add a note for the merge and renaming (#13333) Sebastian Zartner via GitHub (Monday, 12 January)

Re: [csswg-drafts] Start CSS 2026 (#13275) Sebastian Zartner via GitHub (Monday, 12 January)

Closed: [csswg-drafts] Start CSS 2026 (#13275) Sebastian Zartner via GitHub (Monday, 12 January)

[csswg-drafts] [css-2026] Publish Snapshot as Group Note (#13332) Sebastian Zartner via GitHub (Monday, 12 January)

[csswg-drafts] Font optical size multiplication factor (#13331) Daphne Preston-Kendal via GitHub (Monday, 12 January)

Re: [csswg-drafts] [css-2026][geometry-1] Add Geometry 1 to Rough Interop (#12698) Sebastian Zartner via GitHub (Monday, 12 January)

[csswg-drafts] [css-text-4] text-align-first (#13330) Roman Komarov via GitHub (Sunday, 11 January)

Re: [csswg-drafts] [css-2026][css-overscroll-1] Add CSS Overscroll 1 to Rough Interop (#12701) Sebastian Zartner via GitHub (Sunday, 11 January)

Re: [csswg-drafts] [css-2026][css-nesting-1] Add CSS Nesting 1 to Rough Interop (#12704) Sebastian Zartner via GitHub (Sunday, 11 January)

Re: [csswg-drafts] [css-2026][css-pseudo-4] Add `::marker` to Safe to Release Exceptions (#12816) Sebastian Zartner via GitHub (Sunday, 11 January)

[csswg-drafts] [css-pseudo-4] Allow to add a marker to each line (#13329) Sebastian Zartner via GitHub (Sunday, 11 January)

Re: [csswg-drafts] [css-mixins-1] A var()-based model for mixin parameters (#12927) Romain Menke via GitHub (Sunday, 11 January)

Re: [csswg-drafts] [css-mixins-1] Consider a way for mixins to be applied with the style attribute (#13077) Romain Menke via GitHub (Sunday, 11 January)

[csswg-drafts] [css-mixin-1] Example 13 is confusing by using a fictitous `@nest` rule (#13328) Romain Menke via GitHub (Sunday, 11 January)

Closed: [csswg-drafts] [css-color-6] `contrast-color()` doesn't include the existing syntax from `css-color-5` (#10811) Chris Lilley via GitHub (Sunday, 11 January)

Re: [csswg-drafts] [css-color-6] `contrast-color()` doesn't include the existing syntax from `css-color-5` (#10811) Chris Lilley via GitHub (Sunday, 11 January)

Closed: [csswg-drafts] [css-color-5] Make interpolation method optional in `color-mix()`? (#11532) Lea Verou via GitHub (Sunday, 11 January)

Re: [csswg-drafts] [pointer-animations-1] Link `source` and `target` back to right type (#13225) Yehonatan Daniv via GitHub (Sunday, 11 January)

[csswg-drafts] [css-inline-3] Is `alignment-baseline` missing the `hanging` value? (#13327) Sajid Anwar via GitHub (Sunday, 11 January)

Re: [csswg-drafts] [mediaqueries-5] Detect physical keyboard (keyboard capable of shortcuts?) (#3871) Julien Cayzac via GitHub (Saturday, 10 January)

[csswg-drafts] [meta] Drop `Canonical order` property definition field? (#13326) Guillaume via GitHub (Saturday, 10 January)

[csswg-drafts] [cssom-1] CSSStyleDeclaration item() getter doesn't account for out-of-range index (#13325) Anne van Kesteren via GitHub (Saturday, 10 January)

[csswg-drafts] Pull Request: [css-fonts-4] Clarify range constraints on descriptor values in `<font-feature-value-type>` Guillaume via GitHub (Saturday, 10 January)

[csswg-drafts] Pull Request: [css-fonts-4] Clarify range constraints on descriptor values in `<font-feature-value-type>` Guillaume via GitHub (Saturday, 10 January)

[csswg-drafts] [cssom] Serialization of `@font-face` assumes `font-family` descriptor is always present (#13323) Callum Law via GitHub (Saturday, 10 January)

[csswg-drafts] [css-color-4] Discrepancy between § 19.1. ΔE2000 implementation and ISO 11664-6:2014/Sharma et al., 2005 (#13322) initramfs via GitHub (Friday, 9 January)

Re: [csswg-drafts] [css-gaps-1]: Change the initial value for insets property to be 0 (#13137) Kevin Babbitt via GitHub (Friday, 9 January)

Re: [csswg-drafts] [css-display] Interaction gotchas when delaying the effect of `display: none` (#8389) sb3nder via GitHub (Friday, 9 January)

Re: [csswg-drafts] [css-view-transition-1] Simplify handling of ::view-transition (#12767) Psychpsyo (Cameron) via GitHub (Friday, 9 January)

Re: [csswg-drafts] [css-view-transitions-1] Can't we just remove `transition root pseudo-element` and `show view transition tree` from the spec? They seem unnecessary. (#12760) Psychpsyo (Cameron) via GitHub (Friday, 9 January)

Re: [csswg-drafts] [css-nesting-1][css-cascade-6] Clarify absolutization of the selectors of `@scope` and nested style rules (#11212) Guillaume via GitHub (Friday, 9 January)

[csswg-drafts] Pull Request: [css-fonts-4] Create proper types for `<absolute-size>` and `<relative-size>` Sebastian Zartner via GitHub (Friday, 9 January)

Re: [csswg-drafts] [css-conditional-5] Clarify how container query length units are evaluated (#11566) Psychpsyo (Cameron) via GitHub (Friday, 9 January)

[csswg-drafts] Pull Request: [css-fonts-4] Create proper types for `<absolute-size>` and `<relative-size>` François Daoust via GitHub (Friday, 9 January)

[csswg-drafts] [css-color-5] `color-mix()` serialization is outdated (#13320) Sam Atkins via GitHub (Friday, 9 January)

Re: [csswg-drafts] [css-color-5] Make interpolation method optional in `color-mix()`? (#11532) Sam Atkins via GitHub (Friday, 9 January)

[csswg-drafts] Support Negative Indexing in env(viewport-segment-* x y) for Right/Bottom Referencing (#13319) 張俊芝 via GitHub (Friday, 9 January)

[csswg-drafts] [css-backgrounds-3] `spread` variable is undefined in "adjusted radius dimension" (#13318) Sam Atkins via GitHub (Friday, 9 January)

[csswg-drafts] [css-color-6][editorial] Missing definitions for 'd65 whitepoint' and 'candidate color' (#13317) Sebastian Zartner via GitHub (Friday, 9 January)

Re: [csswg-drafts] [mediaqueries] media feature for reduced frame rate (due to low energy/battery saver mode) (#12654) Julien Cayzac via GitHub (Friday, 9 January)

[csswg-drafts] [mediaqueries] media query for relative animation performance (#13316) Julien Cayzac via GitHub (Friday, 9 January)

Re: [csswg-drafts] [css-anchor-position-1] A pseudo class for anchor-positioned state? (#9465) Rune Lillesveen via GitHub (Friday, 9 January)

Re: [csswg-drafts] `:lang(lzh)` elements in non-traditional-Chinese CJK elements should not switch font to Traditional Chinese one (#13050) NFSL2001 via GitHub (Friday, 9 January)

Re: [csswg-drafts] [css-values-5] inherit() function: like var() for parent value, for any property (#2864) Christoph Päper via GitHub (Friday, 9 January)

Re: [csswg-drafts] [css-inline-3] vertical-align: super and font metrics (#5225) Sajid Anwar via GitHub (Friday, 9 January)

Closed: [csswg-drafts] [css-anchor-position-2] Add a `fallback` feature for querying applied fallback for anchored elements (#12391) Rune Lillesveen via GitHub (Friday, 9 January)

Closed: [csswg-drafts] [css-anchor-position-2] Add a new container-type `anchored` for querying anchored elements (#12390) Rune Lillesveen via GitHub (Friday, 9 January)

Closed: [csswg-drafts] [css-anchor-position-2] Add `any` keyword support to `anchored(fallback)` container queries (#12610) Rune Lillesveen via GitHub (Friday, 9 January)

Re: [csswg-drafts] [css-anchor-position] Simplifying math functions for `<percentage>` in `anchor()`? (#12131) fantasai via GitHub (Thursday, 8 January)

[csswg-drafts] [css-values-4] Allow mixing Percentages and Dimensions for the first argument of `progress()` (#13315) Roman Komarov via GitHub (Thursday, 8 January)

Re: [csswg-drafts] [css-transitions-2] Exit animations (`@exit-style`) (#9500) Shahar Har-Shuv via GitHub (Thursday, 8 January)

Re: [csswg-drafts] [css-scoping] Publish an updated WD (#6370) Sebastian Zartner via GitHub (Thursday, 8 January)

[csswg-drafts] Pull Request: [css-shadow-1][css-scoping-1][css-shadow-parts-1] Merged CSS Shadow Parts 1 into CSS Scoping 1 and renamed it to CSS Shadow 1 #5809 Sebastian Zartner via GitHub (Thursday, 8 January)

[csswg-drafts] Pull Request: [css-shadow-1][css-scoping-1][css-shadow-parts-1] Merged CSS Shadow Parts 1 into CSS Scoping 1 and renamed it to CSS Shadow 1 #5809 Sebastian Zartner via GitHub (Thursday, 8 January)

Re: [csswg-drafts] [css-scoping] Publish updated css-scoping-1 draft? (#7494) Sebastian Zartner via GitHub (Thursday, 8 January)

Closed: [csswg-drafts] [css-scoping] Publish updated css-scoping-1 draft? (#7494) Sebastian Zartner via GitHub (Thursday, 8 January)

Re: [csswg-drafts] [css-animations-1] Make `@keyframes` name disallow empty `<string>` (#13151) Javier Fernandez Garcia-Boente via GitHub (Thursday, 8 January)

Re: [csswg-drafts] [css-anchor-position] Various bits of feedback (#12466) Jake Archibald via GitHub (Thursday, 8 January)

Closed: [csswg-drafts] [css-anchor-position] Various bits of feedback (#12466) Jake Archibald via GitHub (Thursday, 8 January)

Re: [csswg-drafts] [css-borders-4] add "radius/corner-smoothing" option to `border-radius` for squircles/superellipse (#10653) Paolo Zago via GitHub (Thursday, 8 January)

Closed: [csswg-drafts] [css-grid] Decide on a name for `item-slack` (#10884) Tim Nguyen via GitHub (Thursday, 8 January)

[csswg-drafts] Pull Request: [css-grid-3] Rename 'item-tolerance' to 'flow-tolerance' Tim Nguyen via GitHub (Thursday, 8 January)

Re: [csswg-drafts] [css-animations] or [css-selectors] Abiliity to invoke an animation on the "exit" of a state selector (#9062) sb3nder via GitHub (Thursday, 8 January)

Re: [csswg-drafts] Add an `::interest-button` pseudo element to interest invokers (#12437) sb3nder via GitHub (Thursday, 8 January)

Closed: [csswg-drafts] [css-2026] Values index: missing position? (#11953) Sebastian Zartner via GitHub (Wednesday, 7 January)

Re: [csswg-drafts] [css-2026] Values index: missing position? (#11953) Sebastian Zartner via GitHub (Wednesday, 7 January)

Re: [csswg-drafts] [css-2026] Snapshot index doesn't have logical properties (#7116) Sebastian Zartner via GitHub (Wednesday, 7 January)

Closed: [csswg-drafts] [css-2026] Snapshot index doesn't have logical properties (#7116) Sebastian Zartner via GitHub (Wednesday, 7 January)

[csswg-drafts] Pull Request: [css-align][css-gaps] Move the gap properties to the Gaps spec and rename per CSSWG resolution. #13089 Kevin Babbitt via GitHub (Wednesday, 7 January)

[csswg-drafts] Pull Request: [css-align][css-gaps] Move the gap properties to the Gaps spec and rename per CSSWG resolution. #13089 Kevin Babbitt via GitHub (Wednesday, 7 January)

Re: [csswg-drafts] [meta] Creating an author-focused entry point summarizing the state of CSS (#4752) Sebastian Zartner via GitHub (Wednesday, 7 January)

Re: [csswg-drafts] Update text/css registration (#5310) Sebastian Zartner via GitHub (Wednesday, 7 January)

Re: [csswg-drafts] [css-flexbox-2] Allow cramming items into a line when they would only overflow if not shrunk (#3071) Alan Stearns via GitHub (Wednesday, 7 January)

Re: [csswg-drafts] [css-sizing] Auto-resize iframes based on content (#1771) CSS Meeting Bot via GitHub (Wednesday, 7 January)

Re: [csswg-drafts] [css-grid] Decide on a name for `item-slack` (#10884) CSS Meeting Bot via GitHub (Wednesday, 7 January)

[csswg-drafts] [css-speech-1] Missing syntax definition for `voice-family-name` (#13311) Romain Menke via GitHub (Wednesday, 7 January)

[csswg-drafts] [css-transforms] Syntax definition for `transform-function` is broken (#13310) Romain Menke via GitHub (Wednesday, 7 January)

[csswg-drafts] [filter-effects-1] Syntax definition of `filter-functions` (#13309) Romain Menke via GitHub (Wednesday, 7 January)

Re: [csswg-drafts] [css-anchor-position] Aliasing names of span-* values to center-span-* for clarity (#12683) CSS Meeting Bot via GitHub (Wednesday, 7 January)

[csswg-drafts] [css-borders-4]: `border-shape` order of shapes in the two-shape variant (#13308) Noam Rosenthal via GitHub (Wednesday, 7 January)

Re: [csswg-drafts] [selectors] Consider adding a :hover-drag pseudo selector (#11834) Bramus via GitHub (Wednesday, 7 January)

Re: [csswg-drafts] Proposal for a user interaction :drag pseudo-class (#11584) Bramus via GitHub (Wednesday, 7 January)

[csswg-drafts] [css-animations-2] Reconsider the property names of the timeline-trigger’s ranges (again). (#13307) Bramus via GitHub (Wednesday, 7 January)

[csswg-drafts] Pull Request: [scroll-animations-1] Define view timeline range 'scroll' David A via GitHub (Wednesday, 7 January)

Re: [csswg-drafts] Define possibly inheritable behaviour for `app-region` (#13101) Diego Gonzalez via GitHub (Wednesday, 7 January)

Re: [csswg-drafts] New name for `app-region` property? (#13102) Diego Gonzalez via GitHub (Wednesday, 7 January)

[csswg-drafts] [css-scoping-1] Spec for tree-scoped names need more nuance (#13305) andruud via GitHub (Wednesday, 7 January)

Re: [csswg-drafts] Republishing Tasks Permathread (#6900) Chris Lilley via GitHub (Wednesday, 7 January)

Re: [csswg-drafts] [css-transitions] Proposal: a way to restrict transitioning to specific state changes (#13224) Yehonatan Daniv via GitHub (Wednesday, 7 January)

Re: [csswg-drafts] [css-align][css-gaps] Move the gap properties to the Gaps spec (#13089) Josh Tumath via GitHub (Wednesday, 7 January)

Re: [csswg-drafts] [css-anchor-position] fallback-position behavior: spec vs. expectation (#12682) ocavue via GitHub (Wednesday, 7 January)

Re: [csswg-drafts] [css-font-loading-3] What is the behavior of adding a FontFace to documents.fonts in another document? (#13251) Simon Fraser via GitHub (Wednesday, 7 January)

Re: [csswg-drafts] [css-forms-1] Checkbox/radio button base appearance has no disabled state (#12225) Said Abou-Hallawa via GitHub (Tuesday, 6 January)

[csswg-drafts] [appearance: base] Need pseudo classes for meter gauge regions (#13304) Said Abou-Hallawa via GitHub (Tuesday, 6 January)

Re: [csswg-drafts] [css-regions-1] Fix spurious / in <img> (#10655) Sebastian Zartner via GitHub (Tuesday, 6 January)

[csswg-drafts] Pull Request: [css-gaps-1] Change decorations to be segments based rather than intersections based #12784 Kevin Babbitt via GitHub (Tuesday, 6 January)

Re: [csswg-drafts] [mediaqueries-5] How do preference overrides work with the color-scheme value? (#11576) Josh Tumath via GitHub (Tuesday, 6 January)

Re: [csswg-drafts] [css-color-6] Does color-layers() need a color interpolation method (or similar)? (#13254) Sam Weinig via GitHub (Tuesday, 6 January)

Re: [csswg-drafts] [mediaqueries-5] How does script control of preferences work with forced color schemes? (#11575) Josh Tumath via GitHub (Tuesday, 6 January)

[csswg-drafts] [mediaqueries-5] Wording in spec for preference override for colorScheme unclear how it affects used color scheme (#13303) Josh Tumath via GitHub (Tuesday, 6 January)

[csswg-drafts] [cssom-view] Ambiguous phrase "in a fixed position containing block" in offsetParent algorithm (#13302) Sam Atkins via GitHub (Tuesday, 6 January)

Re: [csswg-drafts] [css-ui] `caret-shape` definition should mention about the case of IME composition (#13055) Florian Rivoal via GitHub (Tuesday, 6 January)

Re: [csswg-drafts] [css-animations-2] Should animation triggers be their own spec? (#13245) Yehonatan Daniv via GitHub (Tuesday, 6 January)

[csswg-drafts] [cssom-view] "Perform a scroll of a viewport" is passed an associated element it doesn't use (#13301) Sam Atkins via GitHub (Tuesday, 6 January)

Re: [csswg-drafts] [css-borders-4] Refactor contour path algorithm (#13173) Noam Rosenthal via GitHub (Tuesday, 6 January)

Re: [csswg-drafts] [mediaqueries] Effect of <meta name=color-scheme> on the (prefers-color-scheme) MQ (#10249) Bramus via GitHub (Tuesday, 6 January)

Re: [csswg-drafts] [css-overflow] Can you line-clamp by both a number of lines and a height at the same time? (#12041) Florian Rivoal via GitHub (Tuesday, 6 January)

Re: [csswg-drafts] [css-overflow] Initial value of `block-ellipsis` (#12667) Florian Rivoal via GitHub (Tuesday, 6 January)

Closed: [csswg-drafts] [css-overflow] Initial value of `block-ellipsis` (#12667) Florian Rivoal via GitHub (Tuesday, 6 January)

Re: [csswg-drafts] [css-scrollbars-1] Add `scrollbar-style` property for `overlay` scrollbars (#13218) Florian Rivoal via GitHub (Tuesday, 6 January)

[csswg-drafts] Pull Request: [filter-effects-1] rename `kernalMatrix` to `kernelMatrix` zignis via GitHub (Tuesday, 6 January)

Re: [csswg-drafts] [css-overflow-5] `:target-current` pseudo class should also imply `aria-current=true` on an active scroll marker (#12659) Alan Stearns via GitHub (Tuesday, 6 January)

[csswg-drafts] Pull Request: [css-gaps-1] Change decorations to be segments based rather than intersections based #12784 Javier Contreras via GitHub (Monday, 5 January)

Re: [csswg-drafts] [css-grid-3][masonry] Adjustments/additions to `grid` shorthanding (#12023) Alison Maher via GitHub (Monday, 5 January)

Re: [csswg-drafts] [css-gaps-1] Should `rule-break` and `rule-outset` accept two values? (#13097) Kevin Babbitt via GitHub (Monday, 5 January)

Re: [csswg-drafts] [css-grid-3] Make align-self/justify-self align including adjacent extra space (#10275) Alison Maher via GitHub (Monday, 5 January)

Re: [csswg-drafts] [css-align-3][css-position-3] How should safe alignment work for OOF elements when positioned statically? (#11934) Alison Maher via GitHub (Monday, 5 January)

Re: [csswg-drafts] [css-fonts-5] Text Fitting: Default scaling limit (#12886) Chris Harrelson via GitHub (Monday, 5 January)

[csswg-drafts] Pull Request: [css-gaps-1] Update gap decoration behavior when gaps are coincident due to track collapsing #11814 Sam Davis via GitHub (Monday, 5 January)

[csswg-drafts] Pull Request: [css-gaps-1] Update gap decoration behavior when gaps are coincident due to track collapsing #11814 Sam Davis via GitHub (Monday, 5 January)

Re: [csswg-drafts] [css-animations] Clarify whether `<keyframes-name>` supports the empty string (#7762) Alan Stearns via GitHub (Monday, 5 January)

Re: [csswg-drafts] [css-properties-values-api] Allow `<syntax>` production in `syntax` descriptor (#11426) Alan Stearns via GitHub (Monday, 5 January)

[csswg-drafts] [css-cascade-4] [css-values-4]: Undefined parsedURL and (#13297) Shannon Booth via GitHub (Monday, 5 January)

Re: [csswg-drafts] [css-images-4] Add `light-dark-image()`, or generalize `light-dark()` for images too? (#12513) Viktor Yakubiv via GitHub (Monday, 5 January)

[csswg-drafts] Pull Request: [css-animations-2] Add trigger-scope explainer David A via GitHub (Monday, 5 January)

[csswg-drafts] Proposal: new `cursor: info` value (#13295) Felype Couto via GitHub (Monday, 5 January)

Re: [csswg-drafts] [css-gaps-1] Bikeshedding names for ways to break gap decorations (#11491) Javier Contreras via GitHub (Monday, 5 January)

[csswg-drafts] getVisibleClientRect API analogous to getBoundingClientRect (#13294) Nige White via GitHub (Monday, 5 January)

[csswg-drafts] Pull Request: [cssom-1] Validate and normalize CSSStyleSheetInit.baseURL Guillaume via GitHub (Monday, 5 January)

[csswg-drafts] Pull Request: [cssom-1] Validate and normalize CSSStyleSheetInit.baseURL Guillaume via GitHub (Monday, 5 January)

[csswg-drafts] [cssom-1] Should `CSSImportRule.styleSheet` be defined when fetching failed? (#13292) Guillaume via GitHub (Monday, 5 January)

Re: [csswg-drafts] [css-animations-2] Move scroll and event animation triggers to independent namespace (#12336) Bramus via GitHub (Monday, 5 January)

Re: [csswg-drafts] [css-cascade-6] <scope-start> and <scope-end> produce <complex-real-selector-list> (#12747) Guillaume via GitHub (Monday, 5 January)

[csswg-drafts] [cssom-1] Unlink parent style sheet of `@import`ed style sheet when removing `@import` (#13291) Guillaume via GitHub (Monday, 5 January)

[csswg-drafts] [css-cascade-5] Should `&` and relative selectors be valid for non-nested `@scope` selectors? (#13290) Guillaume via GitHub (Sunday, 4 January)

Re: [csswg-drafts] [css-borders] `@border-style` for custom border designs (#13280) Lea Verou via GitHub (Saturday, 3 January)

[csswg-drafts] Pull Request: Create SECURITY.md for security policy mon2000x111-sketch via GitHub (Saturday, 3 January)

[csswg-drafts] [filter-effects-2] Allow masking of filters (#13288) Sebastian Zartner via GitHub (Friday, 2 January)

[csswg-drafts] [css-color-5] Please consider CIE Luv & CIE LCHuv (#13287) mm2t via GitHub (Friday, 2 January)

Re: [csswg-drafts] [css-grid-3] if using `display` we should provide examples for `inline grid-lanes`, and include the `inline-grid-lanes` legacy fallback (#10961) Oriol Brufau via GitHub (Friday, 2 January)

Re: [csswg-drafts] [css-content] Clarify valid and default values of `string-set` (#13244) Guillaume Ayoub via GitHub (Friday, 2 January)

[csswg-drafts] [css-color-5] "CIE LCH" is ambiguous (#13286) mm2t via GitHub (Friday, 2 January)

Re: [csswg-drafts] [css-anchor-position-1] Interaction between trying position options and CSS transitions (#13048) Rune Lillesveen via GitHub (Friday, 2 January)

Re: [csswg-drafts] [css-page-3] Proposed spec changes for safe printable insets. #11395 (#13190) Morten Stenshorne via GitHub (Friday, 2 January)

Re: [csswg-drafts] [css-inline-3][css-text-3] Clarification on vertical-align shorthand and text boundary shaping (#13277) Emilio Cobos Álvarez via GitHub (Friday, 2 January)

Re: [csswg-drafts] [css-borders] Allow multiple borders by listifying them (#13044) Sebastian Zartner via GitHub (Friday, 2 January)

Re: [csswg-drafts] [css-animations-2] Should there be 2 trigger-scope properties? (#13279) Yehonatan Daniv via GitHub (Thursday, 1 January)

[csswg-drafts] Progressive blur for `blur()` (#13285) Damian via GitHub (Thursday, 1 January)

Re: [csswg-drafts] Motion Blur Effects (#11134) Damian via GitHub (Thursday, 1 January)

Last message date: Saturday, 31 January 2026 22:28:15 UTC