Need a popsicle? An experiment in building a UI library for backoffice webapps (optionfactory.net)

Popsicle will be a lightweight library to help build simple and clean backoffice web applications. We need feedback to understand if our specialized UI library can be useful to others. Main points: - modern, evergreen browsers support only - HTML5 & CSS3 for everything - no custom Javascript layout engine - no overlapping with other, well established libraries - easy to hack