html, body, #container {

    width: 100%;

    height: 100%;

    margin: 0;

    padding: 0;

}

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

stage.rect(0,0,stage.width(),stage.height())

.fill(["black", "white"], .5, .5, acgraph.math.Rect(0, 0, 400, 400), 1, .5, .7);