Watch the video! (7:50min)
Download the example to work along with the video.
A theme is automatically applied when you create a new presentation in PowerPoint, even though the slide background is white. This default theme is called the Office Theme. The Office Theme consists of a white background and Calibri font of various sizes for titles and body text.
You can apply a different theme to your slides before adding text or making changes to the default slide. An advantage of doing this is that the location of the text will not move. If you apply the theme after entering text on the slides, the text boxes and placeholders may move, depending on the theme you choose.
An advantage of entering some of your text before applying a new theme is that the live preview feature allows you to see how the themes will affect your specific text. The example below is the Aspect theme.