Answer to Stack Overflow question: http://stackoverflow.com/questions/42625728/how-to-hide-x-and-y-axis-line-only-in-highchart

author(s): Mike Zavarello

HTML

<script src="https://code.highcharts.com/highcharts.js"></script>
<script src="https://code.highcharts.com/modules/exporting.js"></script>

<div id="container" style="min-width: 310px; height: 400px; margin: 0 auto"></div>

JavaScript

Highcharts.chart('container', {
    chart: {
        type: 'column'
    },
    title: {
        text: 'Stacked column chart'
    },
    xAxis: {
        categories: ['Apples', 'Oranges', 'Pears', 'Grapes', 'Bananas'], 
        /* make the x-axis line invisible */
        lineColor: 'blue'
    },
    yAxis: {
        min: 0,
        title: {
            text: 'Total fruit consumption'
        },
        /* make all y-axis gridlines invisible */
        gridLineColor: 'transparent'
    },
    series: [{
        name: 'John',
        data: [5, 3, 4, 7, 2]
    }]
});