Highcharts.chart('container', {
    title: {
        text: 'Full HTML tooltip with border, background and shadow'
    },

    tooltip: {
        backgroundColor: null,
        borderWidth: 0,
        shadow: false,
        useHTML: true,
        style: {
            padding: 0
        }
    },

    xAxis: {
        categories: ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec']
    },

    series: [{
        data: [29.9, 71.5, 106.4, 129.2, 144.0, 176.0, 135.6, 148.5, 216.4, 194.1, 95.6, 54.4]
    }]
});