Simplify postcss config

postcss.config.js

@@ -1,6 +0,0 @@
-module.exports = {
-    plugins: [
-        require('tailwindcss'),
-        require('autoprefixer'),
-    ]
-};

webpack.config.js

@@ -21,7 +21,14 @@ Encore
     .enableVersioning(Encore.isProduction())
     .enableSourceMaps(!Encore.isProduction())
     .cleanupOutputBeforeBuild()
-    .enablePostCssLoader()
+    .enablePostCssLoader(options => {
+        options.postcssOptions = {
+            plugins: [
+                require('tailwindcss'),
+                require('autoprefixer'),
+            ],
+        }
+    })
     .copyFiles([
         { from: './public/typo3conf/ext/ep_theme/Resources/Private/Assets/images', to: 'images/[name].[ext]' },
         { from: './public/typo3conf/ext/ep_theme/Resources/Private/Assets/images/icons', to: 'images/icons/[name].[ext]' },
@@ -70,7 +77,13 @@ Encore
     .autoProvidejQuery()
     .enableSourceMaps(!Encore.isProduction())
     .cleanupOutputBeforeBuild()
-    .enablePostCssLoader()
+    .enablePostCssLoader(options => {
+        options.postcssOptions = {
+            plugins: [
+                require('autoprefixer'),
+            ],
+        }
+    })
     .configureFilenames({
         js: 'js/[name].js',
         css: 'css/[name].css',