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, null, 1, 0.23, 0.81);

stage.ellipse(stage.width() / 2, stage.height() / 2, stage.width() / 2 - 2, stage.height() / 2 - 2)

.stroke("1 green")

.fill("green .2");