I have a ploblem in show reports on Internet with Format htmlcss. Can you show me the way to show report in size A3 ?. I have tried but report's interface I see that is very different from when I design( using Desformat=htmlcss). It not happen when in size A4. I don't know why ?

I really need a solution to What I see when deploying is match with the report designed.

Can you help me, please.