diff --git a/src/ng/directive/ngClass.js b/src/ng/directive/ngClass.js
index 7e2b7674..f1715765 100644
--- a/src/ng/directive/ngClass.js
+++ b/src/ng/directive/ngClass.js
@@ -164,6 +164,7 @@ function classDirective(name, selector) {
      </file>
      <file name="style.css">
        .base-class {
+         -webkit-transition:all cubic-bezier(0.250, 0.460, 0.450, 0.940) 0.5s;
          transition:all cubic-bezier(0.250, 0.460, 0.450, 0.940) 0.5s;
        }