closes #3719

package.json

@@ -15,6 +15,7 @@
   },
   "dependencies": {
     "async": "~1.5.0",
+    "autoprefixer": "^6.2.3",
     "bcryptjs": "~2.3.0",
     "body-parser": "^1.9.0",
     "colors": "^1.1.0",
@@ -59,6 +60,7 @@
     "npm": "^2.1.4",
     "passport": "^0.3.0",
     "passport-local": "1.0.0",
+    "postcss": "^5.0.13",
     "prompt": "^0.2.14",
     "redis": "~2.4.2",
     "request": "^2.44.0",

src/meta/css.js

@@ -7,6 +7,8 @@ var winston = require('winston'),
 	less = require('less'),
 	crypto = require('crypto'),
 	async = require('async'),
+	autoprefixer = require('autoprefixer'),
+	postcss = require('postcss'),
 
 	plugins = require('../plugins'),
 	emitter = require('../emitter'),
@@ -185,16 +187,24 @@ module.exports = function(Meta) {
 				return;
 			}
 
-			Meta.css[destination] = lessOutput.css;
+			winston.verbose('[meta/css] Running PostCSS Plugins');
+			postcss([ autoprefixer ]).process(lessOutput.css).then(function (result) {
+				result.warnings().forEach(function (warn) {
+					winston.verbose(warn.toString());
+				});
 
-			// Save the compiled CSS in public/ so things like nginx can serve it
-			if (nconf.get('isPrimary') === 'true') {
-				Meta.css.commitToFile(destination);
-			}
+				Meta.css[destination] = result.css;
+
+				// Save the compiled CSS in public/ so things like nginx can serve it
+				if (nconf.get('isPrimary') === 'true') {
+					Meta.css.commitToFile(destination);
+				}
+
+				if (typeof callback === 'function') {
+					callback(null, result.css);
+				}
+			});
 
-			if (typeof callback === 'function') {
-				callback(null, lessOutput.css);
-			}
 		});
 	}