
The CSS border-image-repeat property defines whether the border-image should be repeated, rounded or stretched.
Demo:
Syntax:
border-image-repeat: stretch|repeat|round|space;
stretch (default) – the image is stretched to fill the area.
repeat – the image is repeated to fill the area.
round – the image is repeated to fill the area (if it does not fill the area with a whole number of tiles, the image is rescaled so it fits).
space – the image is repeated to fill the area (if it does not fill the area with a whole number of tiles, the extra space is distributed around the tiles).
Example:
<!DOCTYPE html>
<html>
<head>
<style>
#borderimg-1 {
border: 15px solid transparent;
padding: 15px;
border-image-source: url(https://lenadesign.org/wp-content/uploads/2021/09/border-1.png);
border-image-repeat: repeat;
border-image-slice: 30;
}
#borderimg-2 {
border: 15px solid transparent;
padding: 15px;
border-image-source: url(https://lenadesign.org/wp-content/uploads/2021/09/border-1.png);
border-image-repeat: round;
border-image-slice: 30;
}
#borderimg-3 {
border: 15px solid transparent;
padding: 15px;
border-image-source: url(https://lenadesign.org/wp-content/uploads/2021/09/border-1.png);
border-image-repeat: stretch;
border-image-slice: 30;
}
</style>
</head>
<body>
<h4>border-image-repeat: repeat;</h4>
<p id="borderimg-1">Here, the image tiles to fill the area. Tiles are divided if necessary.</p>
<h4>border-image-repeat: round;</h4>
<p id="borderimg-2">Here, the image tiles to fill the area. The image is rescaled if necessary, to avoid dividing tiles.</p>
<h4>border-image-repeat: stretch;</h4>
<p id="borderimg-3">Here, the image is stretched to fill the area.</p>
</body>
</html>
Output:
border-image-repeat: repeat;
Here, the image tiles to fill the area. Tiles are divided if necessary.
border-image-repeat: round;
Here, the image tiles to fill the area. The image is rescaled if necessary, to avoid dividing tiles.
border-image-repeat: stretch;
Here, the image is stretched to fill the area.
The original image:

Enjoy coding!
Read also:
Advanced CSS Border-radius/ Drop Shape, Lemon Shape, Leaf Shape & Egg Shape