module.exports = {
  plugins: {
    'autoprefixer': {},
  }
}

@@ -29,17 +29,16 @@
 : %7B%0A    
-'
 autopref
@@ -45,12 +45,165 @@
 ixer
-'
 : %7B
+%0A      browsers: %5B%0A        '%3E1%25',%0A        'last 4 versions',%0A        'Firefox ESR',%0A        'not ie %3C 9', // React doesn't support IE8 anyway%0A      %5D%0A    
 %7D,%0A 

Add diff browser support for autoprefixer