Operation method:
1. Slide Page Size Settings Click Design-Slide Size
2.PPT default format-normal slide size-standard 4:3 or widescreen 16:9.
3. Manual setting-Manual setting by width and height.
4. Adjustment of slide page size-the adjustment of slide page size should be before PPT layout design, otherwise the whole page will be deformed.
5. Slide show page settings-16:9 full screen, 4:3 widescreen