<flex>

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since October 2017.

The <flex> CSS data type denotes a flexible length within a grid container. It is used in grid-template-columns, grid-template-rows and other related properties.

Syntax

The <flex> data type is specified as a <number> followed by the unit fr. The fr unit represents a fraction of the leftover space in the grid container. As with all CSS dimensions, there is no space between the unit and the number.

Examples

Examples of correct values for the fr data type

1fr    /* Using an integer value */
2.5fr  /* Using a float value */

Example of use in a track listing for CSS grid layout

css
.grid {
  display: grid;
  grid-template-columns: 1fr 1fr 2.5fr 1.5fr;
}

Specifications

Specification
CSS Grid Layout Module Level 2
# fr-unit

Browser compatibility

Report problems with this compatibility data on GitHub
desktopmobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
<flex>

Legend

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Full support
Full support

See also