Answer :
Themes are found on the design tab. You'll find design themes in the Themes bunch.
To review how the current slide would look with a specific subject applied, rest your pointer over the thumbnail picture of that topic.
PowerPoint gives an assortment of design themes — including facilitated variety plans, foundations, textual styles, and position of placeholders. Utilizing pre-designed themes makes it simple for you to change the general look of your show rapidly.
Of course, PowerPoint applies the plain Office subject to new, blank introductions. Notwithstanding, you can without much of a stretch change the look and feel of your show by applying an alternate topic.
1. The plain Office topic is applied when you pick Blank Show
2. In the Themes gallery, you can change to another subject
3. The chosen subject is currently applied to your show
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