Yes!!! I changed it to mobile black and mobile. But still same issue. I think as Koen and Mustafa said I must be aligned the grid layout and components are inside layout should be autosize. As Michael said IPad display would be 1024 x 768. So I have to design according to it. Correct me if I am wrong.
And I could not see Mobile IPad theme in design studio. Is mobile black and mobile Ipad both are same? or Mobile Ipad theme is missing in my design studio?