Sort breakpoint variants with decimal values numerically

CHANGELOG.md

@@ -33,6 +33,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Only normalize top-level `and`, `or`, and `not` keywords in `supports-[…]` variants (e.g. `selector(a: not (.foo))` → `selector(a:not(.foo))`) ([#20420](https://github.com/tailwindlabs/tailwindcss/pull/20420))
 - Don't warn about Angular's `::ng-deep` and `:host-context()` when optimizing CSS ([#20434](https://github.com/tailwindlabs/tailwindcss/pull/20434))
 - Don't generate CSS for candidates containing an empty additional modifier (e.g. `bg-red-500/50/` and `group-hover/foo//bar:flex`) ([#20466](https://github.com/tailwindlabs/tailwindcss/pull/20466))
+- Sort `min-*`, `max-*`, and container query variants with decimal values numerically (e.g. `min-[40.25rem]` before `min-[40.5rem]`) ([#XXXXX](https://github.com/tailwindlabs/tailwindcss/pull/XXXXX))
 
 ## [4.3.3] - 2026-07-16
 

packages/tailwindcss/src/utils/compare-breakpoints.ts

@@ -25,7 +25,7 @@ export function compareBreakpoints(a: string, z: string, direction: 'asc' | 'des
     // Compare by bucket name
     (aBucket === zBucket ? 0 : aBucket < zBucket ? -1 : 1) ||
     // If bucket names are the same, compare by value
-    (direction === 'asc' ? parseInt(a) - parseInt(z) : parseInt(z) - parseInt(a))
+    (direction === 'asc' ? parseFloat(a) - parseFloat(z) : parseFloat(z) - parseFloat(a))
 
   // If the groups are the same, and the contents are not numbers, the
   // `order` will result in `NaN`. In this case, we want to make sorting

packages/tailwindcss/src/variants.test.ts

@@ -1424,6 +1424,43 @@ test('sorting `min` and `max` should sort by unit, then by value, then alphabeti
   `)
 })
 
+test('sorting `min` and `max` should compare decimal values numerically', async () => {
+  expect(
+    await run([
+      'min-[40.5rem]:flex',
+      'min-[40.25rem]:flex',
+      'max-[40.25rem]:flex',
+      'max-[40.5rem]:flex',
+    ]),
+  ).toMatchInlineSnapshot(`
+    "
+    @media not all and (min-width: 40.5rem) {
+      .max-\\[40\\.5rem\\]\\:flex {
+        display: flex;
+      }
+    }
+
+    @media not all and (min-width: 40.25rem) {
+      .max-\\[40\\.25rem\\]\\:flex {
+        display: flex;
+      }
+    }
+
+    @media (min-width: 40.25rem) {
+      .min-\\[40\\.25rem\\]\\:flex {
+        display: flex;
+      }
+    }
+
+    @media (min-width: 40.5rem) {
+      .min-\\[40\\.5rem\\]\\:flex {
+        display: flex;
+      }
+    }
+    "
+  `)
+})
+
 test('supports', async () => {
   expect(
     await run([