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 February 2017.

border-image-source CSS 属性设置用以创建元素边框图像的源图像。

尝试一下

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: #000;
  border: 30px solid;
  border-image: url("/shared-assets/images/examples/border-diamonds.png") 30
    round;
  font-size: 1.2em;
}

border-image-slice 属性用于将源图像分割为多个区域，然后动态地应用到最终的边框图像。

语法

css
/* 关键字值 */
border-image-source: none;

/* <image> 值 */
border-image-source: url(image.jpg);
border-image-source: linear-gradient(to top, red, yellow);

/* 全局值 */
border-image-source: inherit;
border-image-source: initial;
border-image-source: revert;
border-image-source: revert-layer;
border-image-source: unset;

值

none

不使用边框图像，而由 border-style 定义所展现的外观。

<image>

用作边框的图片引用。

形式定义

初始值none
适用元素all elements, except internal table elements when border-collapse is collapse. It also applies to ::first-letter.
是否是继承属性否
计算值none or the image with its URI made absolute
动画类型离散值

形式语法

border-image-source = 
  none     |
  <image>  

<image> = 
  <url>       |
  <gradient>  

<url> = 
  <url()>  |
  <src()>  

<url()> = 
  url( <string> <url-modifier>* )  |
  <url-token>                      

<src()> = 
  src( <string> <url-modifier>* )

示例

基础示例

css
.box {
  border-image-source: url("image.png");
}

规范

Specification
CSS Backgrounds and Borders Module Level 3
# the-border-image-source

浏览器兼容性

参见