Hi,
How can I set full width on cell without margin left and right?
Try to set https://bryntum.com/docs/grid/api/Grid/column/Column#config-cellCls
and define padding: 0
for that class.
To make it at runtime, there is an access to cellElement from https://bryntum.com/docs/grid/api/Grid/column/Column#config-renderer , check params list.
All the best,
Alex