offset

Baseline 2023

Newly available

Since August 2023, this feature works across the latest devices and browser versions. This feature might not work in older devices or browsers.

offset CSS 简写属性设置了沿定义的路径为元素设置动画所需的所有属性。

备注： 规范的早期版本称此属性为 motion。

尝试一下

复合属性

此属性是以下 CSS 属性的简写：

语法

css
/* 偏移位置 */
offset: auto;
offset: 10px 30px;
offset: none;

/* 偏移路径 */
offset: ray(45deg closest-side);
offset: path("M 100 100 L 300 100 L 200 300 z");
offset: url(arc.svg);

/* 使用距离和/或旋转偏移路径 */
offset: url(circle.svg) 100px;
offset: url(circle.svg) 40%;
offset: url(circle.svg) 30deg;
offset: url(circle.svg) 50px 20deg;

/* 包括偏移锚点 */
offset: ray(45deg closest-side) / 40px 20px;
offset: url(arc.svg) 2cm / 0.5cm 3cm;
offset: url(arc.svg) 30deg / 50px 100px;

/* 全局值 */
offset: inherit;
offset: initial;
offset: revert;
offset: revert-layer;
offset: unset;

形式定义

初始值as each of the properties of the shorthand:
适用元素transformable elements
是否是继承属性否
Percentagesas each of the properties of the shorthand:
计算值as each of the properties of the shorthand:
Animation typeas each of the properties of the shorthand:
Creates stacking contextyes

形式语法

offset = 
  [ <'offset-position'>? [ <'offset-path'> [ <'offset-distance'> || <'offset-rotate'> ]? ]? ]! [ / <'offset-anchor'> ]?

示例

让元素在路径上运动

HTML

html
<div id="offsetElement"></div>

CSS

css
@keyframes move {
  from {
    offset-distance: 0%;
  }

  to {
    offset-distance: 100%;
  }
}

#offsetElement {
  width: 50px;
  height: 50px;
  background-color: blue;
  offset: path("M 100 100 L 300 100 L 200 300 z") auto;
  animation: move 3s linear infinite;
}

结果

规范

Specification
Motion Path Module Level 1
# offset-shorthand

浏览器兼容性

BCD tables only load in the browser

参见