offset Property

The CSS shorthand property offset makes it easier for an element to animate along a certain path.

  • It has many characteristics that together comprise an offset transform.
  • With this transform, a specified point inside the element (offset-anchor) is aligned to a certain path position (offset-position) at various points along the route (offset-distance).
  • It also allows the element to be optionally rotated (offset-rotate) to follow the path’s direction.

Constituent Properties

The offset property is a shorthand for the following CSS properties:

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

Possible Values

The following list of values is accepted by offset shorthand property.

  • offset-anchor – Defines a point within the element that aligns with an offset position on the path.
  • offset-path – Defines the path along which the element is animated.
  • offset-distance – Defines how far along the path the element is placed.
  • offset-rotate – Optionally rotates the element to align with the direction of the path.
  • auto – All properties are reset to their default values.

Applies to

Transformable elements

Syntax

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

CSS offset – path value

The following example demonstrates the usage of offset shorthand property with path value.

Open Compiler

<html><head><style>
@keyframes slide {
    0% {
        offset-distance: 0%;
    }
    100% {
        offset-distance: 100%;
    }
}
.container {
    width: 400px;
    height: 200px;
    border: 2px solid #3498db;
    border-radius: 10px;
    position: relative;
    overflow: hidden;
    background-color: #f0f0f0;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.5);
}
.text {
    position: absolute;
    font-size: 28px;
    color: #3954cc;
    animation: slide 6s ease-in-out infinite alternate;
    offset: path('M 10 100 Q 50 50 90 100 T 170 100 T 250 100');
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.4);
}
</style></head><body><div class="container"><div class="text">This is Sliding Text</div></div></body></html>

CSS offset – path and auto value

The following example demonstrates the usage of offset shorthand property with path and auto value.

Open Compiler

<html><head><style>
@keyframes orbit {
    0% {
        offset-distance: 0%;
        offset-rotate: 0deg;
    }
    100% {
        offset-distance: 100%;
        offset-rotate: 360deg;
    }
}
#planet {
    width: 60px;
    height: 60px;
    background-color: #0000A0;
    border-radius: 50%;
    position: absolute;
    animation: orbit 6s linear infinite;
    offset: path('M 200 200 m -100, 0 a 100,100 0 1,0 200,0 a 100,100 0 1,0 -200,0') auto;
}
#sun {
    width: 100px;
    height: 100px;
    background-color: #ffd700;
    border-radius: 50%;
    position: absolute;
    left: 28%;
    top: 33%;
    transform: translate(-50%, -50%);
}
</style></head><body><div id="sun"></div><div id="planet"></div></body></html>

CSS Offset – Related Properties

Following table lists related properties to offset property:

PropertyDescription
offset-anchorSpecifies the position inside an element’s box that acts as the offset path.
offset-distanceSpecifies where element should be positioned.
offset-pathSpecifies element’s path inside its parent container.
offset-rotateSpecifies the orientation or direction of an element as it moves along the specified offset-path.
offset-positionProvide an element’s starting location along a route.

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