Update tailwindcss monorepo to v4.3.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
@tailwindcss/postcss (source)	4.1.15 → 4.3.0
tailwindcss (source)	4.1.15 → 4.3.0

---

Release Notes

tailwindlabs/tailwindcss (@​tailwindcss/postcss)

v4.3.0

Compare Source

Added

• Add @container-size utility (#​18901)
• Add scrollbar-{auto,thin,none} utilities for scrollbar-width, and scrollbar-thumb-* / scrollbar-track-* color utilities for scrollbar-color (#​19981, #​20019)
• Add scrollbar-gutter-* utilities (#​20018)
• Add zoom-* utilities (#​20020)
• Add tab-* utilities (#​20022)
• Allow using @variant with stacked variants (e.g. @variant hover:focus { … }) (#​19996)
• Allow using @variant with compound variants (e.g. @variant hover, focus { … }) (#​19996)
• Support --default(…) in --value(…) and --modifier(…) for functional @utility definitions (#​19989)

Fixed

• Ensure @plugin resolves package JavaScript entries instead of browser CSS entries when using @tailwindcss/vite (#​19949)
• Fix relative @import and @plugin paths resolving from the wrong directory when using @tailwindcss/vite (#​19965)
• Ensure CSS files containing @variant are processed by @tailwindcss/vite (#​19966)
• Resolve imports relative to base when result.opts.from is not provided when using @tailwindcss/postcss (#​19980)
• Canonicalization: preserve significant _ whitespace in arbitrary values (#​19986)
• Canonicalization: add parentheses when removing whitespace from arbitrary values would hurt readability (e.g. w-[calc(100%---spacing(60))] → w-[calc(100%-(--spacing(60)))]) (#​19986)
• Canonicalization: preserve the original unit in arbitrary values instead of normalizing to base units (e.g. -mt-[20in] → mt-[-20in], not mt-[-1920px]) (#​19988)
• Canonicalization: migrate arbitrary :has() variants from [&:has(…)] to has-[…] (#​19991)
• Upgrade: don’t migrate inline style attributes (e.g. style="flex-grow: 1" → style="flex-grow: 1", not style="grow: 1") (#​19918)
• Allow multiple @utility definitions with the same name but different value types (#​19777)
• Export missing PluginWithConfig type from tailwindcss/plugin to fix errors when inferring plugin config types (#​19707)
• Ensure start and end legacy utilities without values do not generate CSS (#​20003)
• Ensure --value(…) is required in functional @utility definitions (#​20005)
• Canonicalization: preserve required whitespace around operators in negated arbitrary values (e.g. -left-[(var(--a)+var(--b))]) (#​20011)

v4.2.4

Compare Source

Fixed

• Ensure imports in @import and @plugin still resolve correctly when using Vite aliases in @tailwindcss/vite (#​19947)

v4.2.3

Compare Source

Fixed

• Canonicalization: improve canonicalizations for tracking-* utilities by preferring non-negative utilities (e.g. -tracking-tighter → tracking-wider) (#​19827)
• Fix crash due to invalid characters in candidate (exceeding valid unicode code point range) (#​19829)
• Ensure query params in imports are considered unique resources when using @tailwindcss/webpack (#​19723)
• Canonicalization: collapse arbitrary values into shorthand utilities (e.g. px-[1.2rem] py-[1.2rem] → p-[1.2rem]) (#​19837)
• Canonicalization: collapse border-{t,b}-* into border-y-*, border-{l,r}-* into border-x-*, and border-{t,r,b,l}-* into border-* (#​19842)
• Canonicalization: collapse scroll-m{t,b}-* into scroll-my-*, scroll-m{l,r}-* into scroll-mx-*, and scroll-m{t,r,b,l}-* into scroll-m-* (#​19842)
• Canonicalization: collapse scroll-p{t,b}-* into scroll-py-*, scroll-p{l,r}-* into scroll-px-*, and scroll-p{t,r,b,l}-* into scroll-p-* (#​19842)
• Canonicalization: collapse overflow-{x,y}-* into overflow-* (#​19842)
• Canonicalization: collapse overscroll-{x,y}-* into overscroll-* (#​19842)
• Read from --placeholder-color instead of --background-color for placeholder-* utilities (#​19843)
• Upgrade: ensure files are not emptied out when killing the upgrade process while it's running (#​19846)
• Upgrade: use config.content when migrating from Tailwind CSS v3 to Tailwind CSS v4 (#​19846)
• Upgrade: never migrate files that are ignored by git (#​19846)
• Add .env and .env.* to default ignored content files (#​19846)
• Canonicalization: migrate overflow-ellipsis into text-ellipsis (#​19849)
• Canonicalization: migrate start-full → inset-s-full, start-auto → inset-s-auto, start-px → inset-s-px, and start-<number> → inset-s-<number> as well as negative versions (#​19849)
• Canonicalization: migrate end-full → inset-e-full, end-auto → inset-e-auto, end-px → inset-e-px, and end-<number> → inset-e-<number> as well as negative versions (#​19849)
• Canonicalization: move the - sign inside the arbitrary value -left-[9rem] → left-[-9rem] (#​19858)
• Canonicalization: move the - sign outside the arbitrary value ml-[calc(-1*var(--width))] → -ml-(--width) (#​19858)
• Improve performance when scanning JSONL / NDJSON files (#​19862)
• Support NODE_PATH environment variable in standalone CLI (#​19617)

v4.2.2

Compare Source

Fixed

• Don't crash when candidates contain prototype properties like row-constructor (#​19725)
• Canonicalize calc(var(--spacing)*…) expressions into --spacing(…) (#​19769)
• Fix crash in canonicalization step when handling utilities containing @property at-rules (e.g. shadow-sm border) (#​19727)
• Skip full reload for server only modules scanned by client CSS when using @tailwindcss/vite (#​19745)
• Add support for Vite 8 in @tailwindcss/vite (#​19790)
• Improve canonicalization for bare values exceeding default spacing scale suggestions (e.g. w-1234 h-1234 → size-1234) (#​19809)
• Fix canonicalization resulting in empty list (e.g. w-5 h-5 size-5 → '' instead of size-5) (#​19812)

v4.2.1

Compare Source

Fixed

• Allow trailing dash in functional utility names for backwards compatibility (#​19696)
• Properly detect classes containing . characters within curly braces in MDX files (#​19711)

v4.2.0

Compare Source

Added

• Add mauve, olive, mist, and taupe color palettes to the default theme (#​19627)
• Add @tailwindcss/webpack package to run Tailwind CSS as a webpack plugin (#​19610)
• Add pbs-* and pbe-* utilities for padding-block-start and padding-block-end (#​19601)
• Add mbs-* and mbe-* utilities for margin-block-start and margin-block-end (#​19601)
• Add scroll-pbs-* and scroll-pbe-* utilities for scroll-padding-block-start and scroll-padding-block-end (#​19601)
• Add scroll-mbs-* and scroll-mbe-* utilities for scroll-margin-block-start and scroll-margin-block-end (#​19601)
• Add border-bs-* and border-be-* utilities for border-block-start and border-block-end (#​19601)
• Add inline-*, min-inline-*, max-inline-* utilities for inline-size, min-inline-size, and max-inline-size (#​19612)
• Add block-*, min-block-*, max-block-* utilities for block-size, min-block-size, and max-block-size (#​19612)
• Add inset-s-*, inset-e-*, inset-bs-*, inset-be-* utilities for inset-inline-start, inset-inline-end, inset-block-start, and inset-block-end (#​19613)
• Add font-features-* utility for font-feature-settings (#​19623)

Fixed

• Prevent double @supports wrapper for color-mix values (#​19450)
• Allow whitespace around @source inline() argument (#​19461)
• Emit comment when source maps are saved to files when using @tailwindcss/cli (#​19447)
• Detect utilities containing capital letters followed by numbers (#​19465)
• Fix class extraction for Rails' strict locals (#​19525)
• Align @utility name validation with Oxide scanner rules (#​19524)
• Fix infinite loop when using @variant inside @custom-variant (#​19633)
• Allow multiples of .25 in aspect-* fractions (e.g. aspect-8.5/11) (#​19688)
• Ensure changes to external files listed via @source trigger a full page reload when using @tailwindcss/vite (#​19670)
• Improve performance of Oxide scanner in bigger projects by reducing file system walks (#​19632)
• Ensure import aliases in Astro v5 work without crashing when using @tailwindcss/vite (#​19677)
• Allow escape characters in @utility names to improve support with formatters such as Biome (#​19626)
• Fix incorrect canonicalization results when canonicalizing multiple times (#​19675)
• Add .jj to default ignored content directories (#​19687)

Deprecated

• Deprecate start-* and end-* utilities in favor of inset-s-* and inset-e-* utilities (#​19613)

v4.1.18

Compare Source

Fixed

• Ensure validation of source(…) happens relative to the file it is in (#​19274)
• Include filename and line numbers in CSS parse errors (#​19282)
• Skip comments in Ruby files when checking for class names (#​19243)
• Skip over arbitrary property utilities with a top-level ! in the value (#​19243)
• Support environment API in @tailwindcss/vite (#​18970)
• Preserve case of theme keys from JS configs and plugins (#​19337)
• Write source maps correctly on the CLI when using --watch (#​19373)
• Handle special defaults (like ringColor.DEFAULT) in JS configs (#​19348)
• Improve backwards compatibility for content theme key from JS configs (#​19381)
• Upgrade: Handle future and experimental config keys (#​19344)
• Try to canonicalize any arbitrary utility to a bare value (#​19379)
• Validate candidates similarly to Oxide (#​19397)
• Canonicalization: combine text-* and leading-* classes (#​19396)
• Correctly handle duplicate CLI arguments (#​19416)
• Don’t emit color-mix fallback rules inside @keyframes (#​19419)
• CLI: Don't hang when output is /dev/stdout (#​19421)

v4.1.17

Compare Source

Fixed

• Substitute @variant inside legacy JS APIs (#​19263)
• Prevent occasional crash on Windows when loaded into a worker thread (#​19242)

v4.1.16

Compare Source

Fixed

• Discard candidates with an empty data type (#​19172)
• Fix canonicalization of arbitrary variants with attribute selectors (#​19176)
• Fix invalid colors due to nested & (#​19184)
• Improve canonicalization for & > :pseudo and & :pseudo arbitrary variants (#​19178)

---

Configuration

📅 Schedule: (UTC)

• Branch creation
  • At any time (no schedule defined)
• Automerge
  • At any time (no schedule defined)

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about these updates again.

---

• If you want to rebase/retry this PR, check this box

---

This PR was generated by Mend Renovate. View the repository job log.

[vercel]

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Preview	Comments	Updated (UTC)
ned.im	Error			Oct 20, 2025 2:07pm

💡 Enable Vercel Agent with $100 free credit for automated AI reviews