Fixes.

node_modules/cssstyle/lib/properties/marginBottom.js

@@ -0,0 +1,13 @@
+'use strict';
+
+var margin = require('./margin.js');
+var parsers = require('../parsers.js');
+
+module.exports.definition = {
+  set: parsers.subImplicitSetter('margin', 'bottom', margin.isValid, margin.parser),
+  get: function() {
+    return this.getPropertyValue('margin-bottom');
+  },
+  enumerable: true,
+  configurable: true,
+};