Ppt20 10 Why can't I click the effect option when setting the animation effect?

The effect option caused by setting error cannot be clicked, and the operation method is as follows:

1. First, open PPT in the computer and create a new blank presentation, as shown in the figure below.

2. Then in the open demo page, click and select the text box that needs to be set to emphasize the animation effect, as shown in the figure below.

3. Then click the "Animation" button in the menu bar and click the drop-down arrow in the "Animation" group, as shown in the figure below.

4. Then click the effect you want to display in the "Emphasis" effect in the "Animation" drop-down box, as shown in the figure below.

5. Finally, click Finish to display the selected effect, as shown in the figure below.