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Summary

The flex-shrink CSS property specifies the flex shrink factor of a flex item.

Initial value1
Applies toflex items, including in-flow pseudo-elements
Inheritedno
Mediavisual
Computed valueas specified
Animation typea number
Canonical orderthe unique non-ambiguous order defined by the formal grammar

See Using CSS flexible boxes for more properties and information.

Syntax

flex-shrink: 2;
flex-shrink: 0.6;

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

Values

<number>
See <number>. Negative values are invalid.

Formal syntax

<number>

Example

HTML

<h4>This is a Flex-Grow</h4>
<h5>A,B,C and F are flex-shrink:1 . D and E are flex-grow:1 .</h5>
<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 class="box" style="background-color:brown;">F</div>
</div>

CSS

#content {
  -ms-box-orient: horizontal;
  display: -webkit-box;
  display: -moz-box;
  display: -ms-flexbox;
  display: -moz-flex;
  display: -webkit-flex;
  display: flex;
    
  -webkit-justify-content: space-around;
  justify-content: space-around;
  -webkit-flex-flow: row wrap;
  flex-flow: row wrap;
  -webkit-align-items: stretch;
  align-items: stretch;
}

.box { 
flex-shrink: 1; 
border: 3px solid rgba(0,0,0,.2);
}

.box1 { 
flex-grow: 1; 
border: 3px solid rgba(0,0,0,.2);
}

Result

Specifications

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

Browser compatibility

Feature Firefox (Gecko) Chrome Internet Explorer Opera Safari
Basic support 18.0 (18.0)[1]
32.0 (32.0)[2]
21.0-webkit 10[3] 12.10 8.0-webkit
Feature Firefox Mobile (Gecko) Android IE Phone Opera Mobile Safari Mobile
Basic support 18.0 (18.0)[1]
32.0 (32.0)[2]
? No support 12.10 No support

[1] Firefox supports only single-line flexbox until Firefox 27. To activate flexbox support, for Firefox 18 and 19, the user has to change the about:config preference layout.css.flexbox.enabled to true.

In addition to the unprefixed support, Gecko 48.0 (Firefox 48.0 / Thunderbird 48.0 / SeaMonkey 2.45) added support for a -webkit prefixed version of the property for web compatibility reasons behind the preference layout.css.prefixes.webkit, defaulting to false. Since Gecko 49.0 (Firefox 49.0 / Thunderbird 49.0 / SeaMonkey 2.46) the preference defaults to true.

[2] Before Firefox 32, Gecko wasn't able to animate values starting or stopping at 0(Spec, Demo).

[3] 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.

See also

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