scroll-snap-coordinate

The scroll-snap-coordinate CSS property defines the positions in x and y coordinates within the element which will align with the nearest ancestor scroll container's scroll-snap-destination for the respective axis.

If the element has been transformed, the snap coordinate is transformed in the same way in order to align the snap point with the element as it is displayed.

/* Keyword value */
scroll-snap-coordinate: none;
/* <position> values */
scroll-snap-coordinate: 50px 50px;                   /* Single coordinate */
scroll-snap-coordinate: 100px 100px, 100px bottom;   /* Multiple coordinates */
/* Global values */
scroll-snap-coordinate: inherit;
scroll-snap-coordinate: initial;
scroll-snap-coordinate: unset;

Syntax

Values

none

Specifies that the element does not contribute to a snap point.

<position>

Specifies the offset of the snap coordinates from the start edge of the element’s border box. For each pairing, the first value gives the x coordinate of the snap coordinate, the second value its y coordinate.

Formal syntax

none | <position>#
where 
<position> = [[ left | center | right | top | bottom | <length-percentage> ] | [ left | center | right | <length-percentage> ] [ top | center | bottom | <length-percentage> ] | [ center | [ left | right ] <length-percentage>? ] && [ center | [ top | bottom ] <length-percentage>? ]]
where 
<length-percentage> = <length> | <percentage>

Example

HTML Content

<div id="container">
  <div>
    <p>At coordinate (0, 0)</p>
    <div class="scrollContainer coordinate0">
      <div>1</div>
      <div>2</div>
      <div>3</div>
    </div>
  </div>
  <div>
    <p>At coordinate (25, 0)</p>
    <div class="scrollContainer coordinate25">
      <div>1</div>
      <div>2</div>
      <div>3</div>
    </div>
  </div>
  <div>
    <p>At coordinate (50, 0)</p>
    <div class="scrollContainer coordinate50">
      <div>1</div>
      <div>2</div>
      <div>3</div>
    </div>
  </div>
</div>

CSS Content

#container {
  display: flex;
}
#container > div:nth-child(-n+2) {
  margin-right: 20px;
}
.scrollContainer {
  width: 100px;
  overflow: auto;
  white-space: nowrap;
  scroll-snap-type: mandatory;
  font-size: 0;
}
.scrollContainer > div {
  width: 100px;
  height: 100px;
  display: inline-block;
  line-height: 100px;
  text-align: center;
  font-size: 50px;
}
.coordinate0 > div {
  scroll-snap-coordinate: 0 0;
}
.coordinate25 > div {
  scroll-snap-coordinate: 25px 0;
}
.coordinate50 > div {
  scroll-snap-coordinate: 50px 0;
}
.scrollContainer > div:nth-child(even) {
  background-color: #87ea87;
}
.scrollContainer > div:nth-child(odd) {
  background-color: #87ccea;
}

Specification

Browser compatibility

[1] On Firefox Mobile, available since Gecko 39, but behind the preference layout.css.vertical-text.enabled, disabled by default.