html, body, #container {

    width: 100%;

    height: 100%;

    margin: 0;

    padding: 0;

}

var stage = acgraph.create('container');

​

var rectangle = stage.rect(0, 0, stage.width() / 3, stage.height() / 2);

​

// Creates linear gradient with angle preservation.

rectangle.fill(['0.4 #F44336', '0.6 #4CAF50'], 45, true);