Nhấp vào thẻ View trên PowerPoint. Nhấp vào nút "Slide Master". Chọn slide chiếu master mà bạn muốn chỉnh sửa. Nhấp vào nút "Background Styles" (Phong cách nền) và chọn "Format Background." Điều chỉnh nền theo các bước trong phần trước.

I'm interested in that, but I only have a few mins. Can you give me at most the first 500 characters of a detailed explanation in English about that?
This will display different view options. A list of all of your master slides will appear in the left frame. These are the theme slides for the different types of content in your presentation. The theme and graphics options on your master slides overrules regular background settings. This will open the slide in the main view. You may need to scroll up on the list to view the main master slide. Different slides in the master list are for different slide layouts. Changes made to that master will a