diff --git a/.babelrc b/.babelrc
index 053e95a..ebb7a71 100644
--- a/.babelrc
+++ b/.babelrc
@@ -1,10 +1,7 @@
 {
   "presets": [
     ["env", {
-      "modules": false,
-      "targets": {
-        "browsers": ["last 2 versions"]
-      }
+      "modules": false
     }]
   ],
   "plugins": [
diff --git a/.browserslistrc b/.browserslistrc
new file mode 100644
index 0000000..c9c0379
--- /dev/null
+++ b/.browserslistrc
@@ -0,0 +1,12 @@
+last 2 major versions
+
+# Desktop
+# last 3 Chrome major versions
+# last 3 Firefox major versions
+# last 3 Edge major versions
+
+# Mobile
+# last 3 ChromeAndroid major versions
+# last 3 FirefoxAndroid major versions
+# last 2 iOS major versions
+
diff --git a/package-lock.json b/package-lock.json
index 5404056..e63163a 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1367,7 +1367,7 @@
       "dev": true,
       "requires": {
         "browserslist": "1.7.7",
-        "caniuse-db": "1.0.30000751",
+        "caniuse-db": "1.0.30000760",
         "lodash.memoize": "4.1.2",
         "lodash.uniq": "4.5.0"
       },
@@ -1378,16 +1378,16 @@
           "integrity": "sha1-C9dnBCWL6CmyOYu1Dkti0aFmsLk=",
           "dev": true,
           "requires": {
-            "caniuse-db": "1.0.30000751",
+            "caniuse-db": "1.0.30000760",
             "electron-to-chromium": "1.3.27"
           }
         }
       }
     },
     "caniuse-db": {
-      "version": "1.0.30000751",
-      "resolved": "https://registry.npmjs.org/caniuse-db/-/caniuse-db-1.0.30000751.tgz",
-      "integrity": "sha1-GRmkC8F+kdh8jAmGlXfGgPnxvv0=",
+      "version": "1.0.30000760",
+      "resolved": "https://registry.npmjs.org/caniuse-db/-/caniuse-db-1.0.30000760.tgz",
+      "integrity": "sha1-PqKUc+t4psywny63Osnh3r/sUo0=",
       "dev": true
     },
     "caniuse-lite": {
@@ -2133,7 +2133,7 @@
           "dev": true,
           "requires": {
             "browserslist": "1.7.7",
-            "caniuse-db": "1.0.30000751",
+            "caniuse-db": "1.0.30000760",
             "normalize-range": "0.1.2",
             "num2fraction": "1.2.2",
             "postcss": "5.2.18",
@@ -2152,7 +2152,7 @@
           "integrity": "sha1-C9dnBCWL6CmyOYu1Dkti0aFmsLk=",
           "dev": true,
           "requires": {
-            "caniuse-db": "1.0.30000751",
+            "caniuse-db": "1.0.30000760",
             "electron-to-chromium": "1.3.27"
           }
         },
@@ -2252,25 +2252,6 @@
         }
       }
     },
-    "csswring": {
-      "version": "6.0.1",
-      "resolved": "https://registry.npmjs.org/csswring/-/csswring-6.0.1.tgz",
-      "integrity": "sha512-/vMPfuLCk1qnfMDsxXmJWghIj0gSZGAa28XLK7MNxLMxYakROv5uHncdRYgPiRe2SWcXmXM5xfLQ46EBi7u1kQ==",
-      "dev": true,
-      "requires": {
-        "minimist": "1.2.0",
-        "onecolor": "3.0.4",
-        "postcss": "6.0.13"
-      },
-      "dependencies": {
-        "minimist": {
-          "version": "1.2.0",
-          "resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.0.tgz",
-          "integrity": "sha1-o1AIsg9BOD7sH7kU9M1d95omQoQ=",
-          "dev": true
-        }
-      }
-    },
     "currently-unhandled": {
       "version": "0.4.1",
       "resolved": "https://registry.npmjs.org/currently-unhandled/-/currently-unhandled-0.4.1.tgz",
@@ -5012,12 +4993,6 @@
         "wrappy": "1.0.2"
       }
     },
-    "onecolor": {
-      "version": "3.0.4",
-      "resolved": "https://registry.npmjs.org/onecolor/-/onecolor-3.0.4.tgz",
-      "integrity": "sha1-daRvgNpseqpbTarhekcZi9llJJQ=",
-      "dev": true
-    },
     "opn": {
       "version": "5.1.0",
       "resolved": "https://registry.npmjs.org/opn/-/opn-5.1.0.tgz",
@@ -6311,7 +6286,7 @@
           "integrity": "sha1-C9dnBCWL6CmyOYu1Dkti0aFmsLk=",
           "dev": true,
           "requires": {
-            "caniuse-db": "1.0.30000751",
+            "caniuse-db": "1.0.30000760",
             "electron-to-chromium": "1.3.27"
           }
         },
diff --git a/package.json b/package.json
index b42a019..3a767ab 100644
--- a/package.json
+++ b/package.json
@@ -38,7 +38,7 @@
     "brfs": "^1.4.3",
     "clean-webpack-plugin": "^0.1.17",
     "css-loader": "^0.28.7",
-    "csswring": "^6.0.1",
+    "cssnano": "^3.10.0",
     "expose-loader": "^0.7.3",
     "extract-text-webpack-plugin": "^3.0.2",
     "file-loader": "^0.11.2",
diff --git a/postcss.config.js b/postcss.config.js
index 406f018..4e7a440 100644
--- a/postcss.config.js
+++ b/postcss.config.js
@@ -15,8 +15,8 @@ module.exports = ({file, options, env}) => ({
     },
     'postcss-color-function': {},
     // 'postcss-strip-inline-comments': {},
-    // env === 'production' ? 'autoprefixer')(options.autoprefixer) : false,
-    'csswring': options.env === 'production' ? options.csswring : false,
+    'autoprefixer': {},
+    'cssnano': options.env === 'production' ? options.cssnano : false,
   },
 })
 
diff --git a/webpack.common.js b/webpack.common.js
index 4310ae0..c5457b6 100644
--- a/webpack.common.js
+++ b/webpack.common.js
@@ -3,7 +3,6 @@ const URL = require('url');
 
 const webpack = require('webpack');
 const ExtractTextPlugin = require('extract-text-webpack-plugin');
-const OptimizeCSSAssetsPlugin = require('optimize-css-assets-webpack-plugin');
 
 const PJ = require('./package.json')
 const CRS_PJ = require('crsearch/package.json')
@@ -157,7 +156,9 @@ module.exports = env => ({
                   config: {
                     ctx: {
                       env: env,
-                      csswring: {},
+                      cssnano: {
+                        autoprefixer: false,
+                      },
                     },
                   },
                 },
@@ -189,8 +190,6 @@ module.exports = env => ({
         disable: false,
         allChunks: true,
       }),
-      // new OptimizeCSSAssetsPlugin({
-      // }),
     ]
   },
 })
diff --git a/webpack.prod.js b/webpack.prod.js
index 80d4fb5..ce23a2a 100644
--- a/webpack.prod.js
+++ b/webpack.prod.js
@@ -1,6 +1,7 @@
 const common = require('./webpack.common.js');
 const webpack = require('webpack');
 const CleanWebpackPlugin = require('clean-webpack-plugin');
+const OptimizeCSSAssetsPlugin = require('optimize-css-assets-webpack-plugin');
 const Merge = require('webpack-merge');
 
 module.exports = env => (Merge.multiple(common(env), {
@@ -17,5 +18,12 @@ module.exports = env => (Merge.multiple(common(env), {
       }),
     ],
   },
+  css: {
+    plugins: [
+      new OptimizeCSSAssetsPlugin({
+        canPrint: true,
+      }),
+    ],
+  },
 }))