<div id="container"></div>
html, body, #container {
width: 100%;
height: 100%;
margin: 0;
padding: 0;
}
var stage = acgraph.create('container');
var blueCircle = stage.circle(170, 100, 100);
blueCircle.fill('#90CAF9');
// Sets z-index (circle is located before rectangle).
blueCircle.zIndex(1);
var rectangle = stage.rect(220, 50, 100, 100);
rectangle.fill('#EF9A9A');