How to replace the bottom plate of ppt slides

1. First, let's create a new PPT document to demonstrate. We create a few slides at will. As you can see, the background of all the slides is white.

2. Select any slide, as shown in the figure. Click "Design" in the menu bar, and you will see the "Background" button in the ribbon below. We click on "background" and expand to appear. Click the "Background" button in the menu below again.

3. The right column pops up. We can choose a variety of filling forms to change the background, such as solid color, gradient, pictures, arts and sciences, etc. We choose solid color filling to demonstrate, as shown in the figure below, we choose green.

4. At this point, the background of the selected slide becomes green.