How to add background in Google Docs?

For  adding a background image or color to your Google Docs document, the following steps can be followed:

1. Open your Google Docs document.
2. Click on "File" in the top left corner of the screen.
3. Select "Page setup" from the dropdown menu.
4. In the "Page setup" dialog box, click on the "Background" section.
5. To add a background color, click on the "Color" option and select a color from the color palette.
6. To add a background image, click on the "Image" option and select an image from your computer, Google Drive, or search for an image using Google Images.
7. Adjust the transparency of the background image or color using the slider if necessary.
8. Click "OK" to apply the background to your document.

After following all the above steps, background will be set in google docs.