A family of Microsoft presentation graphics products that offer tools for creating presentations and adding graphic effects like multimedia objects and special effects with text.
Slides don't really have margins. Instead, chose View>Slide Master and adjust all placeholders so their edges are your preferred distance from the slide edges. Start at the top with the slide master (the larger thumbnail at the top of the left-hand list in Slide Master view), then adjust each layout below the master. Then, back in Normal (Edit) view, click on Home>Reset to update each slide to the new layouts.