From fa9523c0632b7bdfb06e98a87c9d3638abe78cfd Mon Sep 17 00:00:00 2001
From: Joe Haddad <joe.haddad@zeit.co>
Date: Thu, 10 Sep 2020 13:46:14 -0400
Subject: [PATCH] Document CSS Grid Better (#16996)

Fixes #10508
---
 .../customizing-postcss-config.md             | 41 +++++++++++++++++--
 1 file changed, 38 insertions(+), 3 deletions(-)

diff --git a/docs/advanced-features/customizing-postcss-config.md b/docs/advanced-features/customizing-postcss-config.md
index 71e3db3b4adcc..b89b4817f11c2 100644
--- a/docs/advanced-features/customizing-postcss-config.md
+++ b/docs/advanced-features/customizing-postcss-config.md
@@ -26,13 +26,48 @@ Out of the box, with no configuration, Next.js compiles CSS with the following t
    - [Gap Properties](https://developer.mozilla.org/en-US/docs/Web/CSS/gap)
    - [Media Query Ranges](https://developer.mozilla.org/en-US/docs/Web/CSS/Media_Queries/Using_media_queries#Syntax_improvements_in_Level_4)
 
-By default, [Custom Properties](https://developer.mozilla.org/en-US/docs/Web/CSS/var) (CSS variables) are **not compiled** for IE11 support.
+By default, [CSS Grid](https://www.w3.org/TR/css-grid-1/) and [Custom Properties](https://developer.mozilla.org/en-US/docs/Web/CSS/var) (CSS variables) are **not compiled** for IE11 support.
+
+To compile [CSS Grid Layout](https://developer.mozilla.org/en-US/docs/Web/CSS/grid) for IE11, you can place the following comment at the top of your CSS file:
+
+```css
+/* autoprefixer grid: autoplace */
+```
+
+You can also enable IE11 support for [CSS Grid Layout](https://developer.mozilla.org/en-US/docs/Web/CSS/grid)
+in your entire project by configuring autoprefixer with the configuration shown below (collapsed).
+See ["Customizing Plugins"](#customizing-plugins) below for more information.
+
+<details>
+<summary><strong>Click to view the configuration to enable CSS Grid Layout</strong></summary>
+
+```json
+{
+  "plugins": [
+    "postcss-flexbugs-fixes",
+    [
+      "postcss-preset-env",
+      {
+        "autoprefixer": {
+          "flexbox": "no-2009",
+          "grid": "autoplace"
+        },
+        "stage": 3,
+        "features": {
+          "custom-properties": false
+        }
+      }
+    ]
+  ]
+}
+```
+
+</details>
+<br/>
 
 CSS variables are not compiled because it is [not possible to safely do so](https://github.com/MadLittleMods/postcss-css-variables#caveats).
 If you must use variables, consider using something like [Sass variables](https://sass-lang.com/documentation/variables) which are compiled away by [Sass](https://sass-lang.com/).
 
-> **Note**: To support [Grid Layout](https://developer.mozilla.org/en-US/docs/Web/CSS/grid), you need to enable `grid: "autoplace"` for Autoprefixer. See ["Customizing Plugins"](#customizing-plugins) below.
-
 ## Customizing Target Browsers
 
 Next.js allows you to configure the target browsers (for [Autoprefixer](https://github.com/postcss/autoprefixer) and compiled css features) through [Browserslist](https://github.com/browserslist/browserslist).