How do you apply multiple background images in CSS?

To apply multiple background images in CSS, you utilize the property background-image and separate each image URL with a comma. This allows you to layer multiple images on top of each other within the same element. When using this method, the first image specified will be the topmost layer, and subsequent images will appear behind it, providing a stacking effect.

For example:

.element {

background-image: url('image1.png'), url('image2.png');

}

This syntax enables you to create complex visual designs by combining different images easily. The images can also be manipulated individually with properties like background-position, background-size, and background-repeat, providing further control over how each layer behaves.