Web/CSS/flex-shrink

The flex-shrink CSS property sets the flex shrink factor of a flex item. If the size of all flex items is larger than the flex container, items shrink to fit according to flex-shrink.

In use, flex-shrink is used alongside the other flex properties flex-grow and flex-basis, and normally defined using the flex shorthand.

Syntax

/* <number> values */
flex-shrink: 2;
flex-shrink: 0.6;

/* Global values */
flex-shrink: inherit;
flex-shrink: initial;
flex-shrink: unset;

The flex-shrink property is specified as a single <number>.

Values

<number>: See <number>. Negative values are invalid. Defaults to 1.

Formal definition

Initial value	`1`
Applies to	flex items, including in-flow pseudo-elements
Inherited	no
Computed value	as specified
Animation type	a number

Formal syntax

<number>

Examples

Setting flex item shrink factor

HTML

<p>The width of content is 500px; the flex-basis of the flex items is 120px.</p>
<p>A, B, C have flex-shrink:1 set. D and E have flex-shrink:2 set</p>
<p>The width of D and E is less than the others.</p>
<div id="content">
  <div class="box" style="background-color:red;">A</div>
  <div class="box" style="background-color:lightblue;">B</div>
  <div class="box" style="background-color:yellow;">C</div>
  <div class="box1" style="background-color:brown;">D</div>
  <div class="box1" style="background-color:lightgreen;">E</div>
</div>

CSS

#content {
  display: flex;
  width: 500px;
}

#content div {
  flex-basis: 120px;
  border: 3px solid rgba(0,0,0,.2);
}

.box {
  flex-shrink: 1;
}

.box1 {
  flex-shrink: 2;
}

Result

Specifications

Specification	Status	Comment
CSS Flexible Box Layout ModuleThe definition of 'flex-shrink' in that specification.	Candidate Recommendation	Initial definition

Browser compatibility

Update compatibility data on GitHub

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`flex-shrink`	Chrome Full support 29 Full support 29 Full support 22 Prefixed' Prefixed' Implemented with the vendor prefix: -webkit-	Edge Full support 12 Full support 12 Full support 12 Prefixed' Prefixed' Implemented with the vendor prefix: -webkit-	Firefox Full support 20 Notes' Full support 20 Notes' Notes' Since Firefox 28, multi-line flexbox is supported. Notes' Before Firefox 32, Firefox wasn't able to animate values starting or stopping at `0`. Full support 49 Prefixed' Prefixed' Implemented with the vendor prefix: -webkit- Full support 44 Prefixed' Disabled' Prefixed' Implemented with the vendor prefix: -webkit- Disabled' From version 44: this feature is behind the `layout.css.prefixes.webkit` preference (needs to be set to `true`). To change preferences in Firefox, visit about:config. No support 18 — 20 Disabled' Disabled' From version 18 until version 20 (exclusive): this feature is behind the `layout.css.flexbox.enabled` preference (needs to be set to `true`). To change preferences in Firefox, visit about:config.	IE Full support 10 Notes' Full support 10 Notes' Notes' Internet Explorer 10 uses `0` instead of `1` as the initial value for the `flex-shrink` property. A workaround is to always set an explicit value for `flex-shrink`. See Flexbug #6 for more info.	Opera Full support 12.1 Full support 12.1 Full support 15 Prefixed' Prefixed' Implemented with the vendor prefix: -webkit-	Safari Full support 9 Full support 9 Full support 8 Prefixed' Prefixed' Implemented with the vendor prefix: -webkit-	WebView Android Full support 4.4 Full support 4.4 Full support ≤37 Prefixed' Prefixed' Implemented with the vendor prefix: -webkit-	Chrome Android Full support 29 Full support 29 Full support 25 Prefixed' Prefixed' Implemented with the vendor prefix: -webkit-	Firefox Android Full support 20 Notes' Full support 20 Notes' Notes' Since Firefox 28, multi-line flexbox is supported. Notes' Before Firefox 32, Firefox wasn't able to animate values starting or stopping at `0`. Full support 49 Prefixed' Prefixed' Implemented with the vendor prefix: -webkit- Full support 44 Prefixed' Disabled' Prefixed' Implemented with the vendor prefix: -webkit- Disabled' From version 44: this feature is behind the `layout.css.prefixes.webkit` preference (needs to be set to `true`). To change preferences in Firefox, visit about:config. No support 18 — 20 Disabled' Disabled' From version 18 until version 20 (exclusive): this feature is behind the `layout.css.flexbox.enabled` preference (needs to be set to `true`). To change preferences in Firefox, visit about:config.	Opera Android Full support 12.1 Full support 12.1 Full support 14 Prefixed' Prefixed' Implemented with the vendor prefix: -webkit-	Safari iOS Full support 9 Full support 9 Full support 8 Prefixed' Prefixed' Implemented with the vendor prefix: -webkit-	Samsung Internet Android Full support 2.0 Full support 2.0 Full support 1.5 Prefixed' Prefixed' Implemented with the vendor prefix: -webkit-

Legend

Full support: Full support
See implementation notes.': See implementation notes.
User must explicitly enable this feature.': User must explicitly enable this feature.
Requires a vendor prefix or different name for use.': Requires a vendor prefix or different name for use.