Note the "Margins" setting is currently set to "Default", if you change it to "Minimal" it will look more like this:
Go to File--> Page Setup, then click on the "Margins & Header/Footer" tab. If you set the margins to .1 each, then you will use more paper space and the margins will be smaller.
Select Print--> Page Setup to adjust your margins. Internet Explorer will limit you to .25 margins:
From the print dialog, you can choose a custom paper time. You can then edit the margin sizes.