add autoprefixer

build/webpack.base.config.js

@@ -33,5 +33,12 @@ module.exports = {
         }
       }
     ]
+  },
+  vue: {
+    postcss: [
+      require('autoprefixer')({
+        browsers: ['last 3 versions']
+      })
+    ]
   }
 }

build/webpack.client.config.js

@@ -19,14 +19,12 @@ if (process.env.NODE_ENV === 'production') {
   // extract CSS into a single file so it's applied on initial render
   const ExtractTextPlugin = require('extract-text-webpack-plugin')
 
-  config.vue = {
-    loaders: {
+  config.vue.loaders = {
     stylus: ExtractTextPlugin.extract({
       loader: "css-loader!stylus-loader",
       fallbackLoader: "vue-style-loader"
     })
   }
-  }
 
   config.plugins.push(
     new ExtractTextPlugin('styles.css'),

package.json

@@ -24,6 +24,7 @@
     "vuex-router-sync": "^3.0.0"
   },
   "devDependencies": {
+    "autoprefixer": "^6.4.0",
     "babel-core": "^6.0.0",
     "babel-loader": "^6.0.0",
     "babel-preset-es2015": "^6.13.2",