How to set margins 0 on print preview?

Question

Where am i doing wrong?

This is the normal print preview:

Answer 1

I don't think it is actually possible to do this, because you'd be overruling the defaults on the user's computer. As far as I know, a web application doesn't have the access rights to alter something like printer settings without some kind of ActiveX script in IE.

I had a similar problem a while back, and ended up having to generate a PDF on the fly using TCPDF. In the end that worked out better, because you have greater control over the layout.