border-image-source
Baseline
Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.
The border-image-source CSS property sets the source image used to create an element's border image.
Try it
border-image-source: url("/shared-assets/images/examples/border-diamonds.png");
border-image-source: url("/shared-assets/images/examples/border-stars.png");
border-image-source: repeating-linear-gradient(
45deg,
transparent,
#4d9f0c 20px
);
border-image-source: none;
<section id="default-example">
<div id="example-element">This is a box with a border around it.</div>
</section>
#example-element {
width: 80%;
height: 80%;
display: flex;
align-items: center;
justify-content: center;
padding: 50px;
background: #fff3d4;
color: black;
border: 30px solid;
border-image: url("/shared-assets/images/examples/border-diamonds.png") 30
round;
font-size: 1.2em;
}
The border-image-slice property is used to divide the source image into regions, which are then dynamically applied to the final border image.
Syntax
css
/* Keyword value */
border-image-source: none;
/* <image> values */
border-image-source: url("image.jpg");
border-image-source: linear-gradient(to top, red, yellow);
/* Global values */
border-image-source: inherit;
border-image-source: initial;
border-image-source: revert;
border-image-source: revert-layer;
border-image-source: unset;
Values
none-
No border image is used. The appearance defined by
border-styleis displayed instead. <image>-
Image reference to use for the border.
Formal definition
| Initial value | none |
|---|---|
| Applies to | all elements, except internal table elements when border-collapse is collapse. It also applies to ::first-letter. |
| Inherited | no |
| Computed value | none or the image with its URI made absolute |
| Animation type | discrete |
Formal syntax
border-image-source =
none |
<image>
<image> =
<url> |
<gradient>
<url> =
<url()> |
<src()>
<url()> =
url( <string> <url-modifier>* ) |
<url-token>
<src()> =
src( <string> <url-modifier>* )
Examples
>Basic example
css
.box {
border-image-source: url("image.png");
}
Specifications
| Specification |
|---|
| CSS Backgrounds and Borders Module Level 3> # border-image-source> |
Browser compatibility
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See also
borderoutlinebox-shadowbackground-image<url>type- Border images in CSS: A key focus area for Interop 2023 on MDN blog (2023)