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.

Try it


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

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

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



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

Formal definition

Initial value1
Applies toflex items, including in-flow pseudo-elements
Computed valueas specified
Animation typea number

Formal syntax

flex-shrink = 
<number [0,∞]>


Setting flex item shrink factor


<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>


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

#content div {
  flex-basis: 120px;
  border: 3px solid rgba(0, 0, 0, 0.2);

.box {
  flex-shrink: 1;

.box1 {
  flex-shrink: 2;



CSS Flexible Box Layout Module Level 1
# flex-shrink-property

Browser compatibility

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See also