html, body, #container {

    width: 100%;

    height: 100%;

    margin: 0;

    padding: 0;

}

anychart.onDocumentReady(function () {

    var chart = anychart.line([

        {x: "January", value: 20},

        {x: "February", value: 50},

        {x: "March", value: 30},

        {x: "April", value: 90},

        {x: "May", value: 40}

    ]);

​

    var background = chart.background();

​

    // Set fill with opacity.

    background.fill("#9E9E9E", 0.3);

​

    chart.title("Set fill with opacity");

    chart.container("container");

    chart.draw();

});