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.

    background.fill(['#FEFEFE', '#424242'], 0.5, 0.5, null, 0.4, 0.5, 0.5);

​

    chart.title('Set fill as a radial gradient');

    chart.container('container');

    chart.draw();

});