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.
<flex>
Baseline: Widely supported
Baseline is determined by this web feature being supported on the current and the previous major versions of major browsers.
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 tracklisting 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
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
flex_value |
29 | 12 | 40 | 10 | 28 | 10.1 | 57 | 29 | 40 | 28 | 10.3 | 2.0 |
See also
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https://developer.mozilla.org/en-US/docs/Web/CSS/flex_value