Adjusting Margins on Your Page
If you look at the ruler bar on the left of your screen, you'll see blue (or grey) areas at the top and bottom of the left ruler, and a white area in the middle. The blue areas are your top and bottom margins. You can't move your cursor above the top margins, or below the bottom one. Quite often, you'll want to change the amount of space used for the margins.
If you can't see a ruler on the left hand side, either select it from the Show/Hide panel on the View ribbon at the top of Word. Or click the ruler icon near the top right:
We are going to change the top, left, right, and bottom margins to 1.5 inches. On the Page Layout ribbon drop down the Margins drop down menu and select Custom Margins.
This will open the Margins dialog box where we will place the margin values. Change the top, left, bottom and right to 1.5".