@tailwindcss/webpack

Added

• Add @tailwindcss/turbopack, a Turbopack loader for using Tailwind CSS with Next.js

Fixed

• Ensure watch mode detects changes to symlinked @source files whose real paths aren't otherwise scanned

• Ensure variants using @scope wrap generated utilities instead of nesting inside them

• Ensure nested @scope rules preserve their scoping semantics when flattened

• Preserve declarations directly inside @scope by wrapping them in :where(:scope)

• Ensure generated utilities include a space in empty var() fallbacks (e.g. var(--tw-blur,) → var(--tw-blur, ))

• Canonicalization: Convert arbitrary breakpoint and container query variants to named equivalents (e.g. max-[64rem]:flex → max-lg:flex)

• Prevent @tailwindcss/vite from crashing on every edit under Vite's experimental bundledDev mode

• Ensure @tailwindcss/oxide falls back to WASM on platforms without native bindings

• Extract class candidates from Ruby %w and %W literals using angle brackets or custom delimiters (e.g. %w<flex>, %w|flex|), including in Slim and Haml templates

• Preserve whitespace in --default(…) values in functional @utility definitions (e.g. --default(box alphabetic) no longer becomes boxalphabetic)

• Ensure automatic source detection respects negation-based .gitignore files (e.g. /* followed by !/… patterns)

• Ensure root theme('…') namespace lookups in JavaScript plugins and config files return the full namespace object instead of the value of its DEFAULT key

• Skip ignored directories when generating watch globs instead of walking their contents on every rebuild

• Drop invalid UTF-8 candidates during class detection

• Prevent @tailwindcss/vite from forcing full-page reloads for scanned files that Vite does not handle as modules (e.g. .php files)

• Canonicalization: Don't merge utilities that reference different theme variables set to CSS-wide keywords like unset

• Don't generate utilities when a modifier is used that would otherwise be silently ignored (e.g. rounded-sm/[5], shadow-sm/foo, stroke-2/50)

• Preserve and, or, and not inside selectors in supports-[…] variants (e.g. supports-[selector(a:not(.foo))]:flex)

• Don't warn about Angular's ::ng-deep and :host-context() when optimizing CSS

• Don't generate CSS for candidates containing an empty additional modifier (e.g. bg-red-500/50/ and group-hover/foo//bar:flex)

• Ensure min-*, max-*, and container query variants with decimal values are sorted numerically (e.g. min-[40.25rem] before min-[40.5rem])

• Ensure CSS comments ending with \*/ are closed correctly instead of swallowing the CSS that follows (e.g. /* C:\temp\*/)

• Improve style invalidation performance of group-* and peer-* variants

• Ensure cached compilers release their loadModule and loadStylesheet callbacks after compilation

• Canonicalization: Preserve & when moving a pseudo-element into * or ** (e.g. [&_::before]:flex → **:[&::before]:flex)

• Ensure the Set.prototype.intersection polyfill in canonicalizeCandidates(…) returns the intersection instead of the first set on Node.js < 22

• Canonicalization: Ensure inline theme(…) alphas with more than 2 decimals migrate to a percentage modifier with the same opacity (e.g. theme(colors.red.500/.12345) → text-red-500/[12.345%], not text-red-500/[12.345])

• Canonicalization: Preserve inline theme(…) alphas as an arbitrary percentage when a custom --opacity-* theme value would change the opacity (e.g. theme(colors.red.500/50%) → text-red-500/[50%] with --opacity-50: 10%)

• Ensure the @property fallback isn't applied in Safari versions that no longer support margin-trim: inline

• Treat viewport units like dvmin and svi and font-relative units like cap and rex as lengths in arbitrary values (e.g. text-[10dvmin] generates font-size instead of color)

• Write plugin logs to stderr in tailwindcss canonicalize so they don't end up in the results on stdout

• Extract class shorthands on later lines when Pug text, comments, or quoted attribute values contain unbalanced brackets, or a quote that doesn't start a string (e.g. input(pattern=/"/.source)) (#20547, #20572)

• Underline the correct occurrence of an unsupported data type in --value(…) warnings

• Canonicalization: Prefer an existing candidate when collapsing utilities over another utility with the same default theme value (e.g. text-foreground text-primary → text-primary, not text-card-checked-border)

• Canonicalization: Don't collapse utilities into a utility that uses another theme variable with the same default value (e.g. mt-card mb-card → my-card, not my-4)

• Ensure @tailwindcss/postcss rewrites relative url(…)s of stylesheets that are inlined before it runs (e.g. @imports in Vite) in optimized builds

• Drop nested rules that put a combinator after a pseudo-element when using pseudo-element variants (e.g. selection:* on a utility with a nested & > * rule)

• Don't generate CSS for arbitrary values with unbalanced parentheses or brackets (e.g. w-[calc(1px] or [--x:a[b])

• Canonicalization: Prevent collapse: true from taking exponentially longer when classes are linked through a utility that sets many properties (e.g. sr-only)

• Ensure & is substituted inside :-moz-any(…) and :-webkit-any(…) in custom variants (e.g. @custom-variant firefox (:-moz-any(&));)

• Ensure the standalone macOS binaries have a valid code signature, so macOS 27 no longer kills them at launch

• Ensure @tailwindcss/turbopack and @tailwindcss/webpack rebuild when the input CSS changes (e.g. next dev with Turbopack no longer serves the CSS of the previous edit)

• Canonicalization: Don't drop a utility that sets a --tw-* variable when an unrelated property has the same value (e.g. link mt-4 no longer becomes mt-4 when link sets margin-top: 16px and --tw-translate-x: 16px)

• Decode single-digit hexadecimal escapes in theme variable and @utility names as the CSS spec does (e.g. @theme { --color-\0: red; } no longer registers --color-0)

• Don't treat !important inside strings, comments or url() in declaration values as the important flag (e.g. content: "a !important b")

• Parse a custom property at the end of the input when it has no trailing ; (e.g. --foo: bar as the last declaration)

• Keep a declaration without a ; at the end of the CSS input (e.g. color: red)

Fixed

• Support --watch --poll[=ms] in @tailwindcss/cli when filesystem events are unreliable or unavailable

• Canonicalization: Match arbitrary hex colors against theme colors case-insensitively (e.g. bg-[#fff] and bg-[#FFF] → bg-white)

• Prevent Preflight from overriding Firefox's native iframe:focus-visible outline styles

• Ensure theme('colors.foo') in JS plugins resolves correctly when both --color-foo and --color-foo-bar exist

• Ensure fractional opacity modifiers work with named shadow sizes like shadow-sm/12.5, text-shadow-sm/12.5, drop-shadow-sm/12.5, and inset-shadow-sm/12.5

• Parse selectors like [data-foo]div as two selectors instead of one

• Ensure @tailwindcss/postcss rebuilds when a preprocessor like Sass changes the input CSS without changing the input file on disk

• Ensure CSS nesting is handled even when Lightning CSS isn't run, such as in @tailwindcss/browser and Tailwind Play

• Prevent achromatic theme colors from shifting hue when mixed in polar color spaces like oklch

• Ensure --spacing(0) is optimized to 0px instead of 0 so it remains a <length> when used in calc(…)

• Load @parcel/watcher only when needed in @tailwindcss/cli --watch mode, so one-off builds and --watch --poll work when @parcel/watcher can't be loaded

• Use explicit platform fonts instead of system-ui and ui-sans-serif so CJK text respects the page's lang attribute on Windows

• Prevent @tailwindcss/upgrade from rewriting ignored files when run from a subdirectory

• Ensure earlier @source rules pointing to nested files are scanned when later @source rules point to files in parent folders

• Prevent @tailwindcss/vite from triggering full page reloads when scanned files are processed by Vite but haven't been loaded as modules yet

Fixed

• Support bare spacing values for auto-rows-* and auto-cols-* utilities (e.g. auto-rows-12 and auto-cols-16)

• Prevent @tailwindcss/cli in --watch mode from crashing on Windows when @source points to a directory that doesn't exist

• Prevent @tailwindcss/vite from crashing in Deno v2.8.x when context.parentURL is not a valid URL

• Ensure @tailwindcss/cli in --watch mode rebuilds when the input CSS file changes in an ignored directory

• Allow @variant rules used in addBase(…) to use custom variants defined later

• Prevent @tailwindcss/vite from crashing during HMR when scanned files or directories are deleted

• Generate font-size instead of color declarations for text-[--spacing(…)]

• Prevent @source patterns from scanning unrelated sibling files and folders

• Extract class candidates adjacent to Template Toolkit delimiters like %]…[% in .tt, .tt2, and .tx files

• Extract class candidates from conditional Maud syntax like p.text-black[condition]

• Prevent @position-try rules from triggering unknown at-rule warnings when optimizing CSS

• Support class suggestions for named opacity modifiers from --opacity theme values

• Prevent type errors in @tailwindcss/postcss when used with newer PostCSS patch releases

Added

• Add --silent option to suppress output in @tailwindcss/cli

Fixed

• Remove deprecation warnings by using Module#registerHooks instead of Module#register on Node 26+

• Canonicalization: Don't crash when plugin utilities throw for unsupported values

• Allow @apply to be used with CSS mixins

• Ensure not-* correctly negates @container queries, including style(…) queries

• Ensure drop-shadow-* color utilities work with custom shadow values containing calc(…)

• Fix 'Sourcemap is likely to be incorrect' warnings when using @tailwindcss/vite

• Ensure @tailwindcss/webpack can be installed in Rspack projects without requiring webpack as a peer dependency

• Canonicalization: Don't suggest invalid calc(…) expressions (e.g. px-[calc(1rem+0px)] → px-[calc(1rem+0)])

• Canonicalization: Avoid suggesting large spacing-scale values for arbitrary lengths (e.g. left-[99999px] → left-[99999px], not left-24999.75)

• Ensure @tailwindcss/cli in --watch mode recovers when a tracked dependency is deleted and restored

• Ensure standalone @tailwindcss/cli binaries are ignored when scanning for class candidates

• Ensure class candidates are extracted from Twig addClass(…) and removeClass(…) calls

• Don't crash in the Ruby or Vue preprocessors when scanning files containing invalid UTF-8 bytes

• Allow @variant to be used inside addBase

• Ensure @source globs with symlinks are preserved

• Ensure later @source rules can re-include files excluded by earlier @source not rules

• Upgrade: Don't migrate empty class rules to invalid @utility rules

• Ensure transitions between inset-shadow-none and other inset shadows work correctly

• Ensure explicitly referenced @source directories are scanned even when ignored by git

• Ensure @source globs ending in **/* preserve dynamic path segments to avoid scanning too many files

• Canonicalization: Don't fold calc(…) divisions when the result would require high precision (e.g. w-[calc(100%/3.5)] → w-[calc(100%/3.5)], not w-[28.571428571428573%])

• Serve ESM type declarations to ESM importers of @tailwindcss/postcss

Changed

• Generate 0 instead of calc(var(--spacing) * 0) for spacing utilities like m-0 and left-0

• Generate var(--spacing) instead of calc(var(--spacing) * 1) for spacing utilities like m-1 and left-1

Added

• Add @container-size utility

• 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

• Add zoom-* utilities

• Add tab-* utilities

• Allow using @variant with stacked variants (e.g. @variant hover:focus { … })

• Allow using @variant with compound variants (e.g. @variant hover, focus { … })

• Support --default(…) in --value(…) and --modifier(…) for functional @utility definitions

Fixed

• Ensure @plugin resolves package JavaScript entries instead of browser CSS entries when using @tailwindcss/vite

• Fix relative @import and @plugin paths resolving from the wrong directory when using @tailwindcss/vite

• Ensure CSS files containing @variant are processed by @tailwindcss/vite

• Resolve imports relative to base when result.opts.from is not provided when using @tailwindcss/postcss

• Canonicalization: Preserve significant _ whitespace in arbitrary values

• Canonicalization: Add parentheses when removing whitespace from arbitrary values would hurt readability (e.g. w-[calc(100%---spacing(60))] → w-[calc(100%-(--spacing(60)))])

• Canonicalization: Preserve the original unit in arbitrary values instead of normalizing to base units (e.g. -mt-[20in] → mt-[-20in], not mt-[-1920px])

• Canonicalization: Migrate arbitrary :has() variants from [&:has(…)] to has-[…]

• Upgrade: don’t migrate inline style attributes (e.g. style="flex-grow: 1" → style="flex-grow: 1", not style="grow: 1")

• Allow multiple @utility definitions with the same name but different value types

• Export missing PluginWithConfig type from tailwindcss/plugin to fix errors when inferring plugin config types

• Ensure start and end legacy utilities without values do not generate CSS

• Ensure --value(…) is required in functional @utility definitions

• Canonicalization: Preserve required whitespace around operators in negated arbitrary values (e.g. -left-[(var(--a)+var(--b))])

Fixed

• Canonicalization: Improve canonicalizations for tracking-* utilities by preferring non-negative utilities (e.g. -tracking-tighter → tracking-wider)

• Fix crash due to invalid characters in candidate (exceeding valid unicode code point range)

• Ensure query params in imports are considered unique resources when using @tailwindcss/webpack

• Canonicalization: Collapse arbitrary values into shorthand utilities (e.g. px-[1.2rem] py-[1.2rem] → p-[1.2rem])

• Canonicalization: Collapse border-{t,b}-* into border-y-*, border-{l,r}-* into border-x-*, and border-{t,r,b,l}-* into border-*

• 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-*

• 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-*

• Canonicalization: Collapse overflow-{x,y}-* into overflow-*

• Canonicalization: Collapse overscroll-{x,y}-* into overscroll-*

• Read from --placeholder-color instead of --background-color for placeholder-* utilities

• Upgrade: Ensure files are not emptied out when killing the upgrade process while it's running

• Upgrade: Use config.content when migrating from Tailwind CSS v3 to Tailwind CSS v4

• Upgrade: Never migrate files that are ignored by git

• Add .env and .env.* to default ignored content files

• Canonicalization: Migrate overflow-ellipsis into text-ellipsis

• 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

• 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

• Canonicalization: Move the - sign inside the arbitrary value -left-[9rem] → left-[-9rem]

• Canonicalization: Move the - sign outside the arbitrary value ml-[calc(-1*var(--width))] → -ml-(--width)

• Improve performance when scanning JSONL / NDJSON files

• Support NODE_PATH environment variable in standalone CLI

Added

• Support Vite 8 in @tailwindcss/vite

Fixed

• Don't crash when candidates contain prototype properties like row-constructor

• Canonicalize calc(var(--spacing)*…) expressions into --spacing(…)

• Fix crash in canonicalization step when handling utilities containing @property at-rules (e.g. shadow-sm border)

• Skip full reload for server only modules scanned by client CSS when using @tailwindcss/vite

• Improve canonicalization for bare values exceeding default spacing scale suggestions (e.g. w-1234 h-1234 → size-1234)

• Fix canonicalization resulting in empty list (e.g. w-5 h-5 size-5 → '' instead of size-5)

Added

• Add mauve, olive, mist, and taupe color palettes to the default theme

• Add @tailwindcss/webpack package to run Tailwind CSS as a webpack plugin

• Add pbs-* and pbe-* utilities for padding-block-start and padding-block-end

• Add mbs-* and mbe-* utilities for margin-block-start and margin-block-end

• Add scroll-pbs-* and scroll-pbe-* utilities for scroll-padding-block-start and scroll-padding-block-end

• Add scroll-mbs-* and scroll-mbe-* utilities for scroll-margin-block-start and scroll-margin-block-end

• Add border-bs-* and border-be-* utilities for border-block-start and border-block-end

• Add inline-*, min-inline-*, max-inline-* utilities for inline-size, min-inline-size, and max-inline-size

• Add block-*, min-block-*, max-block-* utilities for block-size, min-block-size, and max-block-size

• Add inset-s-*, inset-e-*, inset-bs-*, inset-be-* utilities for inset-inline-start, inset-inline-end, inset-block-start, and inset-block-end

• Add font-features-* utility for font-feature-settings

Fixed

• Prevent double @supports wrapper for color-mix values

• Allow whitespace around @source inline() argument

• Emit comment when source maps are saved to files when using @tailwindcss/cli

• Detect utilities containing capital letters followed by numbers

• Fix class extraction for Rails' strict locals

• Align @utility name validation with Oxide scanner rules

• Fix infinite loop when using @variant inside @custom-variant

• Allow multiples of .25 in aspect-* fractions (e.g. aspect-8.5/11)

• Ensure changes to external files listed via @source trigger a full page reload when using @tailwindcss/vite

• Improve performance of Oxide scanner in bigger projects by reducing file system walks

• Ensure import aliases in Astro v5 work without crashing when using @tailwindcss/vite

• Allow escape characters in @utility names to improve support with formatters such as Biome

• Fix incorrect canonicalization results when canonicalizing multiple times

• Add .jj to default ignored content directories

Deprecated

• deprecated

  Deprecate start-* and end-* utilities in favor of inset-s-* and inset-e-* utilities