The border-image-repeat property in CSS specifies how the image specified by border-image-source is repeated to create the border image for an element. This property can have the following values:
stretch: The image is stretched to fill the border.
repeat: The image is repeated to fill the border.
round: The image is repeated or truncated to fill the border.
space: The image is repeated with space between the images to fill the border.
Let's see some examples of how border-image-repeat works: