Printing an external file in its own printing routine

I basically have an application that generates reports in a .html file, I use a .html file for the ease of making tables and formatting text.

Now I would like to introduce a way of printing the reports from my program. Because I us开发者_如何学Pythone a .html file, the formatting would not the correct if I was to print it directly from my application (as far as I know). For this reason, I would like to print it just like my web browser would have in order to keep the tabular data intact and the text formatting.

Does anyone know a way to do this?

Thank you.

---

CSS can do everything you need. You may want to open the document in its own window (or Iframe) with its own stylesheet specifically designed for your report.

See: Good rules for setting up print css?