Thanks for the feedback! I dislike the ripple animations, too. This is coming from Material design implementation in Polymer components 1.0. Hijacking navigati

Thanks for the feedback! I dislike the ripple animations, too. This is coming from Material design implementation in Polymer components 1.0. Hijacking navigation wasn't very nice either, absolutely agree. Too bad we didn't have time to drop it. All of this is going to be replaced soon. Codelabs site is moving away from Polymer. Working on the new implementation in https://github.com/googlecodelabs/codelab-elements https://github.com/googlecodelabs/codelab-elements. Contributions are most welcome, of course.