# Welcome to the Highcharts Gantt JS (gantt) Options Reference

These pages outline the chart configuration options, and the methods and properties of Highcharts objects.

Feel free to search this API through the search bar or the navigation tree in the sidebar.

# xAxis.lineWidth

The width of the line marking the axis itself.

In styled mode, the stroke width is given in the `.highcharts-axis-line` or `.highcharts-xaxis-line` class.