border-image-source

Specifies the image used as the border. You can use an actual image file (URL) or even a CSS gradient, which allows for advanced effects like gradient borders.

Quick example

.gradient-border {
  border: 5px solid;
  /* Uses a linear gradient as the border instead of a flat color */
  border-image-source: linear-gradient(to right, #7c3aed, #ec4899);
  border-image-slice: 1;
}

Quick facts

Initial value
none
Inherited
No
Applies to
all elements (except table elements when collapse)
Animation type
discrete

Values

none

border-image-source Browser Support

Widely available Since 2017 96% global usage

This feature is well established and works across many devices and browser versions. It has been available across browsers since 2017.

Safe to use without fallbacks.

15+
15+
6+
12+
ESC