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scroll-behavior

The scroll-behavior CSS property sets the behavior for a scrolling box when scrolling is triggered by the navigation or CSSOM scrolling APIs.

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Note that any other scrolls, such as those performed by the user, are not affected by this property. When this property is specified on the root element, it applies to the viewport instead. This property specified on the body element will not propagate to the viewport.

User agents are allowed to ignore this property.

Syntax

/* Keyword values */
scroll-behavior: auto;
scroll-behavior: smooth;

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

The scroll-behavior property is specified as one of the keyword values listed below.

Values

auto

The scrolling box scrolls instantly.

smooth

The scrolling box scrolls in a smooth fashion using a user-agent-defined timing function over a user-agent-defined period of time. User agents should follow platform conventions, if any.

Formal definition

Initial value auto
Applies to scrolling boxes
Inherited no
Computed value as specified
Animation type discrete

Formal syntax

scroll-behavior = 
  auto    |
  smooth

Examples

Setting smooth scroll behavior

HTML

<nav>
  <a href="#page-1">1</a>
  <a href="#page-2">2</a>
  <a href="#page-3">3</a>
</nav>
<div class="scroll-container">
  <div class="scroll-page" id="page-1">1</div>
  <div class="scroll-page" id="page-2">2</div>
  <div class="scroll-page" id="page-3">3</div>
</div>

CSS

a {
  display: inline-block;
  width: 50px;
  text-decoration: none;
}
nav,
.scroll-container {
  display: block;
  margin: 0 auto;
  text-align: center;
}
nav {
  width: 339px;
  padding: 5px;
  border: 1px solid black;
}
.scroll-container {
  width: 350px;
  height: 200px;
  overflow-y: scroll;
  scroll-behavior: smooth;
}
.scroll-page {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  font-size: 5em;
}

Result

Specifications

Specification
CSS Overflow Module Level 3
# smooth-scrolling

Browser compatibility

Desktop Mobile
Chrome Edge Firefox Internet Explorer Opera Safari WebView Android Chrome Android Firefox for Android Opera Android Safari on IOS Samsung Internet
scroll-behavior 61 79 36 No 48 15.4 61 61 36 45 15.4 8.0

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https://developer.mozilla.org/en-US/docs/Web/CSS/scroll-behavior