tailwindcss

Fixed

• Support --watch --poll[=ms] in @tailwindcss/cli when filesystem events are unreliable or unavailable (#20297)
• Canonicalization: match arbitrary hex colors against theme colors case-insensitively (e.g. bg-[#fff] and bg-[#FFF] → bg-white) (#20298)
• Prevent Preflight from overriding Firefox's native iframe:focus-visible outline styles (#20292)
• Ensure theme('colors.foo') in JS plugins resolves correctly when both --color-foo and --color-foo-bar exist (#20299)
• 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 (#20302)
• Parse selectors like [data-foo]div as two selectors instead of one ()

Fixed

• Support bare spacing values for auto-rows-* and auto-cols-* utilities (e.g. auto-rows-12 and auto-cols-16) (#20229)
• Prevent @tailwindcss/cli in --watch mode from crashing on Windows when points to a directory that doesn't exist ()

Added

• Add --silent option to suppress output in @tailwindcss/cli (#20100)

Fixed

• Remove deprecation warnings by using Module#registerHooks instead of Module#register on Node 26+ (#20028)

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, )

Fixed

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

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)

Added

• Support Vite 8 in @tailwindcss/vite (#19790)

Fixed

• Don't crash when candidates contain prototype properties like row-constructor (#19725)

Fixed

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

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 ()