CSS flex-shrink Property

The flex-shrink property specifies how much the item will shrink relative to the rest of the items of the flex container. If the size of items is larger than the container, items shrink to fit the flex container. When flex-shrink property is not included in the flex shorthand declaration, the value is set to 1 by default. if there are no flexible items,flex-shrink property won't have any effect.

The flex-shrink factor is multiplied by the flex-basis when negative space is distributed.

Initial Value 1
Applies to Fex items, including in-flow pseudo-elements.
Inherited No.
Animatable Yes. Items are animatable.
Version CSS3
DOM Syntax object.style.flexShrink = "4";


flex-shrink: number | initial | inherit;


<!DOCTYPE html>
    <title>Title of the document</title>
      .box {
      width: 320px;
      height: 120px;
      border: 1px dotted #666;
      display: -webkit-flex; /* Safari */
      display: flex;
      .box div {
      -webkit-flex-grow: 1; /* Safari 6.1+ */
      -webkit-flex-shrink: 3; /* Safari 6.1+ */
      -webkit-flex-basis: 100px; /* Safari 6.1+ */
      flex-grow: 1;
      flex-shrink: 3;
      flex-basis: 100px;
      .box div:nth-of-type(2) {
      -webkit-flex-shrink: 7; /* Safari 6.1+ */
      flex-shrink: 7;
    <h2>Flex-shrink property example</h2>
    <div class="box">
      <div style="background-color: #eee;"></div>
      <div style="background-color: #1c87c9;"></div>
      <div style="background-color: #8ebf42;"></div>
      <div style="background-color :#ccc;"></div>
      <div style="background-color: #666;"></div>


Value Description
number Specifies how much the item will shrink relative to the rest of the flexible items of the same container. Default value is 1.
initial Sets the property to its default value.
inherit Inherits this property from its parent element.

Browser support

21-28 -webkit-
10.0+ -ms- 12.0+ 28.0+ 9.0+
6.1-8.0 -webkit-

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