Construct table with grouped columns only by using div elements instead of table

[ivivekrpersonal]

@tanstack/react= shows column grouping feature with table tags.In order to group columns, we need to use colSpan prop on td. This is something that we cant use on divs if we decide to construct a table with divs.

Is there a way to get total width of all leaf columns so that it can be used to simulate col span ?