diff --git a/assets/build/config.js b/assets/build/config.js
index b77763d..c1e6772 100644
--- a/assets/build/config.js
+++ b/assets/build/config.js
@@ -26,6 +26,7 @@ const config = mergeWithConcat({
     watcher: !!argv.watch,
   },
   watch: [],
+  browsers: [],
 }, userConfig);
 
 config.watch.push(`${path.basename(config.paths.assets)}/${config.copy}`);
diff --git a/assets/build/webpack.config.js b/assets/build/webpack.config.js
index 5ba816a..c3e746b 100644
--- a/assets/build/webpack.config.js
+++ b/assets/build/webpack.config.js
@@ -155,7 +155,7 @@ let webpackConfig = {
         output: { path: config.paths.dist },
         context: config.paths.assets,
         postcss: [
-          autoprefixer({ browsers: ['last 2 versions', 'android 4', 'opera 12'] }),
+          autoprefixer({ browsers: config.browsers }),
         ],
       },
     }),
diff --git a/assets/build/webpack.config.optimize.js b/assets/build/webpack.config.optimize.js
index 5de2720..d77c389 100644
--- a/assets/build/webpack.config.optimize.js
+++ b/assets/build/webpack.config.optimize.js
@@ -11,7 +11,10 @@ module.exports = {
   plugins: [
     new OptimizeCssAssetsPlugin({
       cssProcessor: cssnano,
-      cssProcessorOptions: { discardComments: { removeAll: true } },
+      cssProcessorOptions: {
+        discardComments: { removeAll: true },
+        autoprefixer: { browsers: config.browsers },
+      },
       canPrint: true,
     }),
     new ImageminPlugin({
diff --git a/assets/config.json b/assets/config.json
index 084d143..96815a6 100644
--- a/assets/config.json
+++ b/assets/config.json
@@ -15,5 +15,10 @@
   "publicPath": "/app/themes/sage",
   "devUrl": "http://example.dev",
   "proxyUrl": "http://localhost:3000",
-  "cacheBusting": "[name]_[hash:8]"
+  "cacheBusting": "[name]_[hash:8]",
+  "browsers": [
+    "last 2 versions",
+    "android 4",
+    "opera 12"
+  ]
 }