Margin in Microsoft Word doesn't match in Print Preview or Printed version

Question

We have a document template that we're building that looks like this:

When we click Print, the Preview window appears, and we see (note the additional whitespace at the top and left of the blue sidebar):

This Preview is what we see on the physical paper copies as well. Is there a setting that should be changed to prevent this? The left bar and the line below "Document Title" are both in the header, but "Document Title" is not.

Answer 1

We fixed it!

If you click File -> Page Setup, the Paper Size was currently US Letter. From the dropdown, select Manage Custom Sizes. Then add a custom paper size, which will default to 8.5x11, non-printable area will default to user defined. All of the margin fields should be left at 0.

This allows you to do remove the border on the printed document.