html, body, #container {

    width: 100%;

    height: 100%;

    margin: 0;

    padding: 0;

}

anychart.onDocumentReady(function () {

    var stage = anychart.graphics.create("container");

​

    var greyBackground = anychart.standalones.background();

    greyBackground.fill("#2196F3");

    greyBackground.parentBounds(0, 0, 200, 200);

    greyBackground.container(stage);

    greyBackground.draw();

​

    // Gets parent bounds.

    var parentBounds = greyBackground.parentBounds();

​

    var brownBackground = anychart.standalones.background();

    brownBackground.fill("#F44336 0.7");

    brownBackground.corners(100);

    brownBackground.parentBounds(parentBounds);

    brownBackground.container(stage);

    brownBackground.draw();

});