The width of the border in pixels. By default the border width is set to zero which means that the border will not appear.

Example

<div id="stock-chart"></div>
<script>
$("#stock-chart").kendoStockChart({
    navigator: {
        categoryAxis: {
            title: {
                text: "Time Period",
                border: {
                    color: "black",
                    width: 3
                }
            }
        }
    },
    dataSource: {
        data: [
            { date: new Date("2012/01/01"), value: 1 },
            { date: new Date("2012/01/15"), value: 2 },
            { date: new Date("2012/02/01"), value: 3 }
        ]
    },
    dateField: "date",
    valueField: "value"
});
</script>