How to get a merged header on top of original header (as shown above).
Hi @tm290392
Please take a minute to check this demo: http://jsfiddle.net/bdhk1ayx/
This is possible by adding the nested headers. More about them can be read here: https://docs.handsontable.com/pro/1.5.0/demo-nested-headers.html
The header is displayed twice in case if first column is freezed.
Can I give different styling to all nested headers.
yes @tm290392 you can add colors to the nested columns headers - here’s an example http://codepen.io/js-ziggle/pen/pjpNWZ