I can visually build a Responsive design!

Today, we introduce new web services “Webflow” which can built responsive web design visually. The feature is that it can check the preview web design on PC, smartphone and tablet. Anyway, it is likely that it can useful for creating template of responsible design as the service tool can put out as CSS code HTML. Currently, the service has a pre-registration accepted.
http://playground.webflow.com/