From de907f44ce1b3bf2f6df4d985986efba0e13ed56 Mon Sep 17 00:00:00 2001
From: Drew Powers <1369770+drwpow@users.noreply.github.com>
Date: Mon, 15 Nov 2021 17:20:29 -0700
Subject: [PATCH] Add Autoprefixer change to 0.21 migration guide (#1841)

---
 docs/src/pages/migration/0.21.0.md | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/docs/src/pages/migration/0.21.0.md b/docs/src/pages/migration/0.21.0.md
index bc3ce72a0..c61d04be7 100644
--- a/docs/src/pages/migration/0.21.0.md
+++ b/docs/src/pages/migration/0.21.0.md
@@ -186,5 +186,21 @@ To learn more about Vite plugins, please visit their [plugin guide](https://vite
 
 > In prior releases, these were configured with `snowpackPlugin` or `snowpackPluginOptions`.
 
+## Styling Changes
+
+### Autoprefixer
+
+Autoprefixer is no longer run by default. To enable:
+
+1. Install the latest version (`npm i autoprefixer`)
+2. Create a `postcss.config.cjs` file at the root of your project with:
+   ```js
+   module.exports = {
+     plugins: {
+       autoprefixer: {},
+     },
+   };
+   ```
+
 [snowpack]: https://www.snowpack.dev
 [vite]: https://vitejs.dev