How remove border form after create runtime inside ContainerPanel?

[Beginner]

Hi All

How remove border form after create runtime inside ContainerPanel?

Need help i can't remove border by this method

 

extEvents - windows.afterRender:
Ext.get(sender.id).el.setStyle("padding", 0);
Ext.get(sender.id).el.setStyle("border-width", 0);
Ext.get(sender.id).el.setStyle("margin", 0);

 

 FreeAndNil(FCurrentForm);
  FCurrentForm:=TfrmMonitoring.Create(UniApplication);
  FCurrentForm.Parent:=uncntnrpnlMain;
  FCurrentForm.Show();

 

[Sherzod]

Hi,

 

Can you make a small test case for this?

 

Best regards.