Fix site to view better on device mobile, help me?

[eluser]memVN[/eluser]
Hello, everyone. I have a problem like this:
My company was doing a site and what is required to view the screen of mobile devices (Iphone - Ipad) and a further irony is required to see a good fix on the TV screen flashma 42 '

So do you high reviews on this earth not??? Give me an advice, thank you very much