I want to use TUniPageControl 'secretly' on my form. I'll change pages by the code so I also want to hide tab-bar at the top of the control. I found how to do this in the forum:   procedure HideUniPageControlHeader(PC: TUniPageControl); begin //hide UniPageControl header   UniSession.AddJS(Format('%s.items.getAt(0).tabBar.hide();', [PC.JSName])); end;   Well, this is working fine but still, there is border and gray bar at the bottom:     I have tried to add many CSS params :   Cu