offset - CSS: Cascading Style Sheets 编辑

The offset CSS shorthand property sets all the properties required for animating an element along a defined path.

Note: Early versions of the spec called this property motion.

Constituent properties

This property is a shorthand for the following CSS properties:

• offset-anchor
• offset-distance
• offset-path
• offset-position
• offset-rotate

Syntax

/* Offset position */
offset: auto;
offset: 10px 30px;
offset: none;

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

/* Offset path with distance and/or rotation */
offset: url(circle.svg) 100px;
offset: url(circle.svg) 40%;
offset: url(circle.svg) 30deg;
offset: url(circle.svg) 50px 20deg;

/* Including offset anchor */
offset: ray(45deg closest-side) / 40px 20px;
offset: url(arc.svg) 2cm / 0.5cm 3cm;
offset: url(arc.svg) 30deg / 50px 100px;

Formal definition

Formal syntax

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

Examples

Animating an element along a path

HTML

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

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;
}

Result

Specifications

Browser compatibility

BCD tables only load in the browser

See also

• offset-anchor
• offset-distance
• offset-path
• offset-position
• offset-rotate