Updated PostCSS docs and added a link to it (vercel#10292)

Luis Alvarez D · Timer · Timer · commit ee9ccc84cc40 · 2020-01-28T11:02:00.000-05:00
* Updated PostCSS docs and added a link to it

* Added note back

* Update customizing-postcss-config.md

Co-authored-by: Joe Haddad &lt;timer150@gmail.com&gt;
diff --git a/docs/advanced-features/customizing-postcss-config.md b/docs/advanced-features/customizing-postcss-config.md
@@ -54,8 +54,8 @@ You can learn more about [Next.js' CSS Module support here](/docs/basic-features
 
 ## Customizing Plugins
 
-> **Warning**: When you define a custom PostCSS configuration file, Next.js **completely disables** the defaults listed above.
-> Be sure to manually configure all features you need compiled, including [Autoprefixer](https://github.com/postcss/autoprefixer).
+> **Warning**: When you define a custom PostCSS configuration file, Next.js **completely disables** the [default behavior](#default-behavior).
+> Be sure to manually configure all the features you need compiled, including [Autoprefixer](https://github.com/postcss/autoprefixer).
 
 To customize the PostCSS configuration, create a `postcss.config.json` file in the root of your project.
 
@@ -110,10 +110,10 @@ module.exports = {
 }
 ```
 
-Do **not use `require()`** to import the PostCSS Plugins. Plugins must be provided as strings.
-
 > **Note**: Next.js also allows the file to be named `.postcssrc.js`.
 
+Do **not use `require()`** to import the PostCSS Plugins. Plugins must be provided as strings.
+
 > **Note**: If your `postcss.config.js` needs to support other non-Next.js tools in the same project, you must use the interoperable object-based format instead:
 >
 > ```js
diff --git a/docs/basic-features/built-in-css-support.md b/docs/basic-features/built-in-css-support.md
@@ -165,3 +165,14 @@ To support importing `.scss`, `.sass`, `.less`, or `.styl` files you can use
 - [@zeit/next-sass](https://github.com/zeit/next-plugins/tree/master/packages/next-sass)
 - [@zeit/next-less](https://github.com/zeit/next-plugins/tree/master/packages/next-less)
 - [@zeit/next-stylus](https://github.com/zeit/next-plugins/tree/master/packages/next-stylus)
+
+## Related
+
+For more information on what to do next, we recommend the following sections:
+
+<div class="card">
+  <a href="/docs/advanced-features/customizing-postcss-config.md">
+    <b>Customizing PostCSS Config:</b>
+    <small>Extend the PostCSS config and plugins added by Next.js with your own.</small>
+  </a>
+</div>
