9 Pull requests merged by 6 people

• [css-regions-1] Tidy up values & fix build errors.

  #12445 merged Jul 3, 2025

• [css-highlight-api-1] Update Editors

  #12438 merged Jul 2, 2025

• [css-forms-1] Add UA style to give slider fill an inline size of 0 wh…

  #12428 merged Jul 1, 2025

• Frozen items do not guarantee complete distribution of free space

  #11405 merged Jun 28, 2025

• [css-flexbox-1] Fix fallback alignment for align-content:stretch

  #11554 merged Jun 28, 2025

• [selectors-5] fix typo in :heading() syntax

  #12405 merged Jun 27, 2025

• Add scroll-direction state and updated overflowing state to scrollable in the explainer

  #12130 merged Jun 27, 2025

• [selectors-5]: Update heading specs based on resolutions in #10296

  #12404 merged Jun 27, 2025

• [css-selectors-5] add :heading, :heading(An+B) pseudo classes

  #11836 merged Jun 27, 2025

7 Pull requests opened by 6 people

• [css-pseudo-4] Add a note explaining Element.pseudo() behaviour #12159

  #12406 opened Jun 27, 2025

• [css-flexbox-1][editorial] Caption algo sections #11885

  #12413 opened Jun 28, 2025

• [css-env-1] fix pem typo

  #12415 opened Jun 30, 2025

• [css-forms-1] Improve slider UA styles

  #12427 opened Jul 1, 2025

• [css-values-5][editorial] Typo

  #12435 opened Jul 2, 2025

• [css-borders-4] Editorial: moved warning to partial borders section and updated changes

  #12444 opened Jul 3, 2025

• [css-color][editorial] Minor syntax adjustments

  #12448 opened Jul 4, 2025

15 Issues closed by 7 people

• [css-regions-1] `flow-into` and `flow-from` should exclude all CSS-wide keywords

  #9160 closed Jul 4, 2025

• [cssom] #9686 added references to nonexistent `CSSMarginDescriptors`

  #12434 closed Jul 3, 2025

• [css-nesting-1][css-cascade-6] Should/can relative selectors be allowed un-nested

  #12418 closed Jul 2, 2025

• [css-anchor-position] The containing block should be allowed as an acceptable anchor element

  #10412 closed Jul 1, 2025

• [css-grid-3] [masonry] Should items with a definite row/column be placed first?

  #12393 closed Jun 30, 2025

• [css-flexbox] Change content-size suggestion to min-intrinsic instead of min-content?

  #6794 closed Jun 29, 2025

• [css-anchor-position] Popover anchor position not updated on scroll when using align-self: anchor-center;

  #12338 closed Jun 29, 2025

• [css-values-4] Should the `fr` unit be moved to Values and Units?

  #12356 closed Jun 29, 2025

• Accept transform-origin inside @position-try

  #12169 closed Jun 29, 2025

• [css-speech-1] new value `auto` for `speak-as`

  #12126 closed Jun 29, 2025

• [css-flexbox-1] Should 'align-content: stretch' use 'safe' in the fallback value?

  #11641 closed Jun 28, 2025

• [css-color][css-images] define/link how mix percentages are normalized

  #12233 closed Jun 27, 2025

• CSS pseudo-selector for h1-h6?

  #1008 closed Jun 27, 2025

• [selectors][css-content] :level(an+b) Pseudo Class

  #351 closed Jun 27, 2025

• [selectors] Adding a `:heading()` selector for headingoffset?

  #10296 closed Jun 27, 2025

30 Issues opened by 19 people

• [css-color] Dangling `<color-space>`

  #12447 opened Jul 4, 2025

• [selectors] Syntax for matching attribute value relationships (combinator? @-rule? Something else?)

  #12446 opened Jul 3, 2025

• [css2][css-2025] The state of modularization of CSS

  #12443 opened Jul 3, 2025

• [css-view-transitions-1] finished promise timing

  #12442 opened Jul 3, 2025

• [css-text] `text-transform` for local punctuation marks

  #12441 opened Jul 3, 2025

• [css-env-1] Should `env(var(--custom))` be valid?

  #12440 opened Jul 3, 2025

• Question: Is Responsive Web Design a Good Practice / Standard / aproach?

  #12439 opened Jul 3, 2025

• Add a `::interest-hint` pseudo element to interest invokers

  #12437 opened Jul 2, 2025

• Combinator to get from `interestfor` invoker to its target

  #12436 opened Jul 2, 2025

• [css-text] `hanging-punctuation: last` should be "conditionally hang"

  #12433 opened Jul 2, 2025

• [css-grid-3][Masonry] Repeat(auto-fill, auto) and % sized items

  #12432 opened Jul 1, 2025

• [css-gaps-1] Define interpolation behavior

  #12431 opened Jul 1, 2025

• [css-forms-1] Checkbox and radio sizing should meet WCAG

  #12430 opened Jul 1, 2025

• [css-conditional-5] Should `!important` be valid in a style query?

  #12426 opened Jul 1, 2025

• [css-conditional-5] Style and media ranges are inconsistent

  #12425 opened Jul 1, 2025

• [css-conditional-5] Should `revert-*` evaluate to `unknown` instead of `false` in a style query?

  #12424 opened Jul 1, 2025

• [css-grid-3][Masonry] Repeat(auto-fill, auto) requires no stretched auto tracks

  #12423 opened Jul 1, 2025

• [css-position][quirks] Should `positon: sticky` avoid the percentage height calculation quirk?

  #12422 opened Jun 30, 2025

• [css-sizing][quirks] Should `stretch` be affected by percentage height calculation quirk?

  #12421 opened Jun 30, 2025

• [css-values][quirks] Should `calc()` be affected by percentage height calculation quirk?

  #12420 opened Jun 30, 2025

• [css-forms-1] Have 2 slider-fill pseudos?

  #12419 opened Jun 30, 2025

• [css-mixins-1] Are @mixin rules valid within other at-rules?

  #12417 opened Jun 30, 2025

• [css-overflow-4] `line-clamp` shorthand syntax is ambiguous

  #12416 opened Jun 30, 2025

• [css-typed-om] Possible inconsistency in errors thrown from `rectify a CSSColor* val`

  #12414 opened Jun 29, 2025

• [selectors] :heading() selector and the accessibility tree

  #12412 opened Jun 28, 2025

• Practical guide to using will-change with currently invisible elements

  #12411 opened Jun 28, 2025

• [css-values-5][css-conditional-5] Security Concern: Accelerated Data Exfiltration with attr() and Style Query Ranges

  #12410 opened Jun 27, 2025

• [css-forms-1] How to allow control-value() to be used from an arbitrary element?

  #12409 opened Jun 27, 2025

• [view-transitions] Rename “Transition Root” to something else

  #12408 opened Jun 27, 2025

• [view-transitions] Expose `activeViewTransition`

  #12407 opened Jun 27, 2025

94 Unresolved conversations

Sometimes conversations happen on old items that aren’t yet closed. Here is a list of all the Issues and Pull Requests with unresolved conversations.

• [css-anchor-position-1] Allow anchor references to match names in outer tree scopes

  #9408 commented on Jun 27, 2025 • 0 new comments

• [css-align][css-position][css-anchor-position] Introduce "document containing block" for some purposes?

  #10861 commented on Jun 27, 2025 • 0 new comments

• [css-position] Planning for 'position' being a shorthand

  #10069 commented on Jun 27, 2025 • 0 new comments

• [cssom] The way CSSStyleDeclaration exposes properties is not ideal.

  #5649 commented on Jun 28, 2025 • 0 new comments

• [css-flexbox-1] Merge section 9.2 with 9.3

  #11885 commented on Jun 28, 2025 • 0 new comments

• [css-display-4] Proposal: `display-visibility` property

  #12046 commented on Jun 29, 2025 • 0 new comments

• [selectors] Add selector match custom element

  #10407 commented on Jun 29, 2025 • 0 new comments

• [css-ui] cursor property should allow multiple non-url values

  #12047 commented on Jun 29, 2025 • 0 new comments

• [cssom] CSSImportRule.media should be nullable, maybe? Difference between Chromium and Firefox

  #12063 commented on Jun 29, 2025 • 0 new comments

• [css-grid] A way for columns to shrink below their minimum width when they overflow?

  #12071 commented on Jun 29, 2025 • 0 new comments

• [css-transforms] Proposal: allow `<length>` values in `scale`

  #12089 commented on Jun 29, 2025 • 0 new comments

• [CSS-Display-4] Note in `order` section makes incorrect assumptions about sighted and blind use cases

  #12093 commented on Jun 29, 2025 • 0 new comments

• [css-shape] Logical values for the `shape()` function

  #12114 commented on Jun 29, 2025 • 0 new comments

• [css-view-transitions-1] What's the point of position: fixed in `::view-transition`?

  #12116 commented on Jun 29, 2025 • 0 new comments

• [css-align-3][css-position-3] align-items and justify-items for out of flow items

  #12121 commented on Jun 29, 2025 • 0 new comments

• [selectors] :focus-visible matching heuristic unclear for non-interactive elements with tabindex="-1"

  #12127 commented on Jun 29, 2025 • 0 new comments

• [css-anchor-position] Simplifying math functions for `<percentage>` in `anchor()`?

  #12131 commented on Jun 29, 2025 • 0 new comments

• Proposal: wrap-strategy: balanced for visually balanced grid/flex wrapping

  #12264 commented on Jun 29, 2025 • 0 new comments

• [css-sizing] How should auto-sizing of iframes work?

  #12229 commented on Jun 29, 2025 • 0 new comments

• [view-transitions-1] Section 3.2.1 Conflates Pseudo-Elements and their Selectors

  #12190 commented on Jun 29, 2025 • 0 new comments

• [view-transitions-1] Callback is invoked without required parameters

  #12188 commented on Jun 29, 2025 • 0 new comments

• Proposal: touch-callout

  #12178 commented on Jun 29, 2025 • 0 new comments

• [css-pseudo] Click or Tap Location

  #12172 commented on Jun 29, 2025 • 0 new comments

• [css-color-adjust-1] interaction between propagation and forced-color adjustment

  #12168 commented on Jun 29, 2025 • 0 new comments

• [css-color-adjust-1] `ForcedColorsModeAutomationTheme` should not be a Web IDL enum

  #12135 commented on Jun 29, 2025 • 0 new comments

• [css-overflow-4] overflow-clip-margin-* is missing information on how percentages are handled

  #12156 commented on Jun 29, 2025 • 0 new comments

• [Proposal][css-overflow-5][css-2025] Native CSS Detection of Text Truncation

  #12199 commented on Jun 29, 2025 • 0 new comments

• [css-typed-om] Some procedures seems to be missing steps for handling CSSMathClamp

  #12382 commented on Jun 29, 2025 • 0 new comments

• [css-shapes] Actually change the shape of the element and not just visually.

  #12379 commented on Jun 29, 2025 • 0 new comments

• [css-pseudo] Geometry methods for CSSPseudoElement

  #12373 commented on Jun 29, 2025 • 0 new comments

• [cssom-view] Add "sticky" to the features argument to the window.open() method

  #12361 commented on Jun 29, 2025 • 0 new comments

• [css-transition-2] Distinguishing between element mounted and switch `display: none` in `@starting-style`

  #12351 commented on Jun 29, 2025 • 0 new comments

• [css-transition-2] `transition` property in `@starting-style`

  #12350 commented on Jun 29, 2025 • 0 new comments

• [css-inline-3] Expected status of `<length>` and `<percentage>` units for `initial-letter-wrap` (in non-Chromium browsers?)

  #12343 commented on Jun 29, 2025 • 0 new comments

• [css-values-5] allow attr() to be used for URLs

  #12340 commented on Jun 29, 2025 • 0 new comments

• [cssom-view] Range.getClientRects is inconsistent

  #12331 commented on Jun 29, 2025 • 0 new comments

• [css-view-transitions-2] [scoped] Allow self-participating scopes?

  #12319 commented on Jun 29, 2025 • 0 new comments

• [css-view-transitions-2] [scoped] Should the scope be self-participating by default?

  #12320 commented on Jun 29, 2025 • 0 new comments

• [css-view-transitions-2] [scoped] Should the scope have contain:v-t by default?

  #12321 commented on Jun 29, 2025 • 0 new comments

• [css-view-transitions-2] [scoped] Can a self-participating scope be an outer-transition participant?

  #12322 commented on Jun 29, 2025 • 0 new comments

• [css-view-transitions-2] [scoped] When we encounter a tag collision, which transition is skipped?

  #12323 commented on Jun 29, 2025 • 0 new comments

• [css-view-transitions-2] [scoped] What is the layout of the ::v-t pseudo in relation to the scope?

  #12324 commented on Jun 29, 2025 • 0 new comments

• [css-view-transitions-2] [scoped] What is the paint order of the ::v-t pseudo in relation to the scope?

  #12325 commented on Jun 29, 2025 • 0 new comments

• [css-inline-3] `text-box` and `text-overflow` interaction

  #12308 commented on Jun 29, 2025 • 0 new comments

• [css-conditional-5] `scroll-state(stuck)` will remain applying its `@container` ruleset for elements has left viewport

  #12302 commented on Jun 29, 2025 • 0 new comments

• [css-cascade-4] [css-values-4] [css-fonts-4] [css-font-loading] Further issues with URLs and fetching

  #12288 commented on Jun 29, 2025 • 0 new comments

• [css-anchor-position] Fragmentation and bounding boxes

  #12287 commented on Jun 29, 2025 • 0 new comments

• [cssom] Serialization of large numbers should use scientific notation

  #6471 commented on Jun 29, 2025 • 0 new comments

• [selectors] Pseudo-classes for image state

  #3134 commented on Jun 29, 2025 • 0 new comments

• [css-transitions-2] Exit animations (`@exit-style`)

  #9500 commented on Jun 30, 2025 • 0 new comments

• [web-animations-2][css-animations-2] Should an animation be allowed to have multiple triggers associated?

  #12399 commented on Jun 30, 2025 • 0 new comments

• [css-cascade-6] When using @import scope(), are the imported styles 'nested'?

  #11756 commented on Jun 30, 2025 • 0 new comments

• [css-cascade-6] `:scope` scoping root node clarification

  #9739 commented on Jun 30, 2025 • 0 new comments

• [css-ui] Support setting offscreen content inert

  #10711 commented on Jun 30, 2025 • 0 new comments

• [css-borders-4] New `border-radius` value for perfectly matching nested radii

  #7707 commented on Jul 1, 2025 • 0 new comments

• [css-env][css-conditional] Need an approach to check whether an environment variable is supported

  #3576 commented on Jul 1, 2025 • 0 new comments

• [css-fonts] Should `font-style: oblique 14deg` serialize as `font-style: oblique`?

  #11633 commented on Jul 1, 2025 • 0 new comments

• [css-animations-2] Move scroll and event animation triggers to independent namespace

  #12336 commented on Jul 1, 2025 • 0 new comments

• [web-animations-2][css-animations-2] How do AnimationTriggers attach to animations?

  #12397 commented on Jul 1, 2025 • 0 new comments

• [css-values-5][css-namespaces] CSS @namespace rules should probably not allow URLs with request modifiers

  #12077 commented on Jul 1, 2025 • 0 new comments

• [css-color-4] Evaluate static gamut mapping algorithms for oklab/oklch spaces

  #10579 commented on Jul 1, 2025 • 0 new comments

• [css-masking] basic-shape interpolation not interoperable with omitted positions.

  #12339 commented on Jul 1, 2025 • 0 new comments

• [css-align] Does `vertical-align` on table cell set `align-content` safely or not?

  #12220 commented on Jul 1, 2025 • 0 new comments

• [css-forms-1] Rework default styles for slider-like controls

  #12267 commented on Jul 1, 2025 • 0 new comments

• [css-values-5] *-interpolate() grammar can lead to confusing values

  #12348 commented on Jul 1, 2025 • 0 new comments

• [css-forms-1] Password visibility toggle

  #11845 commented on Jul 1, 2025 • 0 new comments

• [css-mixins-1] Should parameters keep their type?

  #12315 commented on Jul 2, 2025 • 0 new comments

• [css-values] Spec does not reject duplicate `<request-url-modifier>`s, but WPT does

  #12151 commented on Jul 2, 2025 • 0 new comments

• [css-view-transitions-1][css-view-transitions-2] Soft-freeze view-transitions L1 and merge into L2

  #11202 commented on Jul 2, 2025 • 0 new comments

• [css-pseudo] Can we make pseudo-elements first-class citizens in the DOM?

  #11559 commented on Jul 2, 2025 • 0 new comments

• [css-env][css-fonts] New `<meta text-scale>` tag to make UA initial font size respond to OS text scale setting

  #12380 commented on Jul 2, 2025 • 0 new comments

• [css-sizing-3][css-values-4] Define `width` and `height` CSS values for SVG Elements in a mapping

  #12376 commented on Jul 2, 2025 • 0 new comments

• [css-values][css-backgrounds][css-animations][css-transitions][fill-stroke] How to handle linked list-valued properties?

  #7164 commented on Jul 2, 2025 • 0 new comments

• [css-fonts-5] Feature for making text always fit the width of its parent

  #2528 commented on Jul 2, 2025 • 0 new comments

• [css-highlight-api][css-anchor-position] Allow `anchor-name` on `::highlight(...)`

  #11100 commented on Jul 2, 2025 • 0 new comments

• Republishing Tasks Permathread

  #6900 commented on Jul 2, 2025 • 0 new comments

• Interpolate values between breakpoints

  #6245 commented on Jul 2, 2025 • 0 new comments

• [Proposal] Support styling based on an element’s intrinsic aspect ratio (or size)

  #12197 commented on Jul 2, 2025 • 0 new comments

• [css-animations-2] Add / separator before animation-trigger exit range

  #11948 commented on Jul 2, 2025 • 0 new comments

• [css-page][css-env] Expose unprintable areas via CSS

  #11395 commented on Jul 2, 2025 • 0 new comments

• Pseudo classes for the `interestfor` API

  #12154 commented on Jul 2, 2025 • 0 new comments

• [css-backgrounds] The shape of box-shadow should be a circle for a box with border-radius:50% and big spread

  #7103 commented on Jul 2, 2025 • 0 new comments

• [cssom-1] `CSSMarginDescriptors` does not have a WebIDL definition

  #10106 commented on Jul 3, 2025 • 0 new comments

• [css-cascade-6] Scoping the subject of a `:has()` selector

  #9841 commented on Jul 3, 2025 • 0 new comments

• [css-values-5] Misleading statement about syntax-checking arbitrary substitution functions at parse time

  #12398 commented on Jul 3, 2025 • 0 new comments

• [css-masking][css-motion] Unify (non-ray() related) grammar of clip-path and motion-path

  #12381 commented on Jul 3, 2025 • 0 new comments

• [css-backgrounds-4] Using logical keywords in background-position shorthand with multiple backgrounds

  #12132 commented on Jul 3, 2025 • 0 new comments

• [css-conditional-5] Add ability to test for at-rule preludes

  #6966 commented on Jul 3, 2025 • 0 new comments

• [css-gaps-1] Gap intersection point definition might need updating for multi-col

  #12084 commented on Jul 3, 2025 • 0 new comments

• [css-cascade-6] `&` matching inside the `@scope`, and its interaction with `:scope`

  #9740 commented on Jul 3, 2025 • 0 new comments

• [selectors] Parameterized selectors

  #10567 commented on Jul 3, 2025 • 0 new comments

• [selectors] `/idref()/` combinator to follow element references for arbitrary IDREF attributes

  #10970 commented on Jul 3, 2025 • 0 new comments

• [css-text] Reconsider the initial value of the `text-autospace` property

  #12386 commented on Jul 4, 2025 • 0 new comments

• [css-values-5] Fix dfn of `<input-position>` and `<output-value>`

  #12349 commented on Jun 27, 2025 • 0 new comments