Highcharts.chart('container', {
    chart: {
        type: 'heatmap'
    },
    title: {
        text: 'Single point heatmap - border and gradient (#3390)'
    },
    series: [{
        borderWidth: 1,
        borderColor: 'black',
        color: {
            linearGradient: {
                x1: 0,
                x2: 1,
                y1: 0,
                y2: 0
            },
            stops: [
                [0, '#FFFFFF'],
                [1, '#007340']
            ]
        },
        data: [{
            x: 0,
            y: 0,
            value: 90
        }]
    }]

});
