Tested it out here: http://raymondgh.link470.com/googlewebdesigner/
Google Web Designer http://i.imgur.com/xEQZdx5.png
Aurora 26.0a2 http://i.imgur.com/FElMNKj.png
iOS Safari http://i.imgur.com/Miqw6bq.png
IE 10.0.9 http://i.imgur.com/yqXaJlL.png
Totally different appearances