This element is styled by Javascript
When you click anywhere, the CSS of body will change.
You can create a new class .example and set it's css. Afther that you can
add new Elements to the DOM with this class, without aplying the styles to the element itself.
var style = new MooCss()
.setStyle(new MooCssStyle('.example',{
background: '#FF9900',
color: 'white',
padding: 20
}))
.write();
new Element('div',{'class': 'example'});