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CSS3 flex-grow Property

Topic: CSS3 Properties ReferencePrev|Next


The flex-grow CSS property specifies how the flex item will grow relative to the other items inside the flex container.

The following table summarizes the usages context and the version history of this property.

Default value: 0
Applies to: Flex items
Inherited: No
Animatable: Yes. See animatable properties.
Version: New in CSS3


The syntax of the property is given with:

number | initial | inherit

The example below shows the flex-grow property in action.

.flex-container {
    display: flex;
.item1 {
    width: 100px;
    background: #ff80c0;
    -webkit-flex-grow: 1; /* Safari 6.1+ */
    flex-grow: 1;
.item2 {
    width: 100px;
    background: #8080ff;
    -webkit-flex-grow: 3; /* Safari 6.1+ */
    flex-grow: 3;
.item3 {
    width: 100px;
    -webkit-flex-grow: 5; /* Safari 6.1+ */
    flex-grow: 5;

Property Values

The following table describes the values of this property.

Value Description
number A positive number that determines the flex grow factor of the flex item. The default value is 0. Negative numbers are invalid.
initial Sets this property to its default value.
inherit If specified, the associated element takes the computed value of its parent element flex-grow property.

Browser Compatibility

The flex-grow property is supported in all major modern browsers.

Browsers Icon

Basic Support—

  • Firefox 18+ -moz-, 28+
  • Google Chrome 21+ -webkit-, 29+
  • Internet Explorer 11+
  • Apple Safari 6.1+ -webkit-
  • Opera 12.1+

Further Reading

See tutorial on: CSS3 Multi-column Layouts.

Related properties: align-content, align-items, align-self, display, flex, flex-basis, flex-direction, flex-flow, flex-shrink, flex-wrap, justify-content, min-height, min-width, order.

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