You can configure the way Firefox prints the content it displays using the Page Setup dialog.
Click
, then click the tab to select the orientation of your print jobs. You can scale or make it auto-adjust. If you want to print a background, select .Figure 62 Page Setup Dialog—Format & Options Page
Click the
tab to adjust margins as well as to select what you want or don’t want in the headers and footers.Figure 63 Page Setup Dialog—Margins & Header/Footer Page