How does the macbook zoom in and out? How are the icons at the bottom of the desktop enlarged and reduced?

1. First find the small apple in the upper left corner and click System Preferences.

2. Click the third stop icon.

3. The top bar is the resizing bar.

As shown in the figure below, I can hardly see the minimum effect of adjustment.

5. The biggest function is to fill the lower row.

6. It is most important to adjust to your comfortable size. You can also try to change to the left or right.

7. That's it.