1, a new word. Click the "Page Layout" option in the menu bar, and click "Custom margins" in the toolbar.
2, in the "page setup" option, set the value of "margins" to 0, and click "OK".
3. Click the "Insert" option in the menu bar and select "Partial Picture" in "Picture" to find the inserted background picture.
4. Click the "Insert" option in the menu bar and make the settings as needed.