offset

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.

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Constituent properties

This property is a shorthand for the following CSS properties:

Syntax

css

/* 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;

/* Global values */
offset: inherit;
offset: initial;
offset: revert;
offset: revert-layer;
offset: unset;

Formal definition

Initial valueas each of the properties of the shorthand:
Applies totransformable elements
Inheritedno
Percentagesas each of the properties of the shorthand:
Computed valueas each of the properties of the shorthand:
Animation typeas each of the properties of the shorthand:
Creates stacking contextyes

Formal syntax

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

Examples

Animating an element along a path

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;
}

Result

Specifications

Specification
Motion Path Module Level 1
# offset-shorthand

Browser compatibility

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See also