HTML to PDF Fomated problem(Using Itext in asp.net using c# )

I am developing  html to pdf converter. While converting Html to PDF, PDf file fully not formated as same as HTML file. i have used html table and div elemrnt .  But pdf has generated with border inn all cell. it does not support font, cell width proerty and style property. Hw to solve this issue. Please help any body in this regard. I am using asp.net 4.0 frame work.The Style sheet not apply for pdf file.

          Can anyone help me.
Its Urgent.
...