Go to the ribbon under Page Layout tab and Page Background section. Click on the button “Page Borders”. From the new menu first choose the overall settings of the border. Next you can look for the style, color, width and art of your liking. The third section shows you the preview of the choices made. In here you can modify the border lines placement and also determine whether the borders are the same for the whole document or for the section or only for the first page or except for the first page. Click “OK” if you are satisfied with the selection.