Creating a Slide Master
As you continue working on your Slide Master, notice that the Master text styles placeholder contains a model of up to five bullets in which the text gets smaller for each level.
In the Slide Master, the font sizes are preselected. The sizes are based on what someone is able to read from a reasonable distance. You can change the font size, but this is fine tuning that you might want to do later.
Generally, you should keep the text the same color for the title and all text levels.