Layer Styles is a HTML5 app for creating CSS3 in a intuitive way. It works just like Adobe Photoshop but in your browser. And it create CSS for you automatically. You can use the Colorpicker to pick any color of the element your working on. Drag and Drop images onto the page to use them as a background or to pick their colors. Color Swatches, Gradients and Styles are locally stored.

Requirements: -
Demo: http://layerstyles.org/
License: License Free