How to reduce the height of column header

I have an application, where I am using the webix.css, but I want to reduce the height of column header.

I wanted to know do you have option like how you have for rows ex : autoheight : true,

There’s no autoheight property for the header, but you can set a custom height:

http://docs.webix.com/datatable__headers_footers.html#customheightforheaderandfooter