Add subgrid utilities (#12298)

* Add subgrid utilities

* Update CHANGELOG

---------

Co-authored-by: Adam Wathan <[email protected]>

Author: adamwathan

CHANGELOG.md

@@ -16,6 +16,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Update Preflight `html` styles to include shadow DOM `:host` pseudo-class ([#11200](https://github.com/tailwindlabs/tailwindcss/pull/11200))
 - Increase default values for `grid-rows-*` utilities from 1–6 to 1–12 ([#12180](https://github.com/tailwindlabs/tailwindcss/pull/12180))
 - Add `size-*` utilities ([#12287](https://github.com/tailwindlabs/tailwindcss/pull/12287))
+- Add utilities for CSS subgrid ([#12298](https://github.com/tailwindlabs/tailwindcss/pull/12298))
 
 
 ## [3.3.6] - 2023-12-04

stubs/config.full.js

@@ -493,6 +493,7 @@ module.exports = {
     },
     gridTemplateColumns: {
       none: 'none',
+      subgrid: 'subgrid',
       1: 'repeat(1, minmax(0, 1fr))',
       2: 'repeat(2, minmax(0, 1fr))',
       3: 'repeat(3, minmax(0, 1fr))',
@@ -508,6 +509,7 @@ module.exports = {
     },
     gridTemplateRows: {
       none: 'none',
+      subgrid: 'subgrid',
       1: 'repeat(1, minmax(0, 1fr))',
       2: 'repeat(2, minmax(0, 1fr))',
       3: 'repeat(3, minmax(0, 1fr))',