Hi Michael,
Thanks for contacting Syncfusion Support.
Query 1: How to change the style of the card when dragstart?
Currently, it is not feasible to change the style of the dragging card. But we can highlight the selected card in Kanban.
Query 2: How to change the style of Kanban so it looks like bellow grid. Need horizontal and vertical line render looks like a grid?
We have achieved your requirement in the sample level by using custom KanbanColumn.
Please find the demo sample from the following location.
Regards,
Sridharan