What are the best practices for using multiple background images in CSS?

When using multiple background images in CSS, it is important to follow best practices to ensure proper display and maintainability of your code. One best practice is to use shorthand properties like `background` or `background-image` to declare multiple background images. Another best practice is to specify the background images in the order you want them to appear, with the first image listed at the top. Additionally, you can use the `background-size` property to control the sizing of each background image. ```css .element { background: url('image1.jpg') top left no-repeat, url('image2.jpg') bottom right no-repeat; background-size: 50% 50%, cover; } ```