# 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.

# palette.injectCSS

Whether to inject the CSS for the dark and light mode. If not injected, you need to include the CSS manually in your page or application, with the appropriate CSS variables. A file with the default CSS variables is available at css/highcharts-palette.css.