CSS - 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.

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;
}

Syntax  

/* 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;

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 | <percentage> | <length> ] | [ left | center | right | <percentage> | <length> ] [ top | center | bottom | <percentage> | <length> ] | [ center | [ left | right ] [ <percentage> | <length> ]? ] && [ center | [ top | bottom ] [ <percentage> | <length> ]? ]]

Description  

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.

Initial valuenone
Applies toall elements
Inheritedno
Percentagesrefer to the element’s border box
Mediainteractive
Computed valueas specified, but with relative lengths converted into absolute lengths
Animatableyes, as a position
Canonical orderthe unique non-ambiguous order defined by the formal grammar

Browser Compatibility  

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support ? 39.0 (39.0) No support No support No support
Feature Android Firefox Mobile (Gecko) Firefox OS IE Phone Opera Mobile Safari Mobile
Basic support No support 39.0 (39.0)[1] 39.0 (39.0) No support No support No support

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

Specification

Specification Status Comment
CSS Scroll Snap Points Module Level 1
The definition of 'scroll-snap-coordinate' in that specification.
Working Draft Initial definition

License

© 2016 Mozilla Contributors
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-us/docs/web/css/scroll-snap-coordinate