You can change the background of your PowerPoint slides using the "Format Background" feature located in the "Design" tab.

Microsoft's PowerPoint presentation program offers you a variety of tools to create exciting presentations and slide shows. You may choose from a collection of features that allow you to add and edit ...

How to add multiple flashing stars in a PowerPoint slide Your email has been sent If one star in your Microsoft PowerPoint presentation is fun, then lots of stars ...

You can add a border to a PowerPoint slide by adding a rectangle shape and removing the fill color, which will give the appearance of a border.