Hello!
The problem is simple: I want to have a Grid with a two-level header. There is an official Vaadin [Grid demo]
(https://demo.vaadin.com/sampler/#ui/grids-and-trees/grid/features) (choose basic), in which header looks like this:
![Original Vaadin Grid layout]
(https://i.imgur.com/AfYsGVx.png)
Is there a way to have the first top cell (h1) span two rows? Like this:
![Original Vaadin Grid layout]
(https://i.imgur.com/F32DmE6.png)
Sry for bad english and thanks in advance for the help)