So siehts ganz gut aus !

node_modules/clean-css/lib/optimizer/level-2/properties/has-inherit.js

@@ -0,0 +1,10 @@
+function hasInherit(property) {
+  for (var i = property.value.length - 1; i >= 0; i--) {
+    if (property.value[i][1] == 'inherit')
+      return true;
+  }
+
+  return false;
+}
+
+module.exports = hasInherit;