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minmax

The minmax() CSS function defines a size range greater than or equal to min and less than or equal to max. It is used with CSS Grids.

Syntax

/* <inflexible-breadth>, <track-breadth> values */
minmax(200px, 1fr)
minmax(400px, 50%)
minmax(30%, 300px)
minmax(100px, max-content)
minmax(min-content, 400px)
minmax(max-content, auto)
minmax(auto, 300px)
minmax(min-content, auto)

/* <fixed-breadth>, <track-breadth> values */
minmax(200px, 1fr)
minmax(30%, 300px)
minmax(400px, 50%)
minmax(50%, min-content)
minmax(300px, max-content)
minmax(200px, auto)

/* <inflexible-breadth>, <fixed-breadth> values */
minmax(400px, 50%)
minmax(30%, 300px)
minmax(min-content, 200px)
minmax(max-content, 200px)
minmax(auto, 300px)

A function taking two parameters, min and max.

Each parameter can be a <length>, a <percentage>, a <flex> value, or one of the keyword values max-content, min-content, or auto.

If max < min, then max is ignored and minmax(min,max) is treated as min. As a maximum, a <flex> value sets the flex factor of a grid track; it is invalid as a minimum.

Values

<length>
A non-negative length.
<percentage>
A non-negative percentage relative to the inline size of the grid container in column grid tracks, and the block size of the grid container in row grid tracks. If the size of the grid container depends on the size of its tracks, then the <percentage> must be treated as auto. The user agent may adjust the intrinsic size contributions of the track to the size of the grid container and increase the final size of the track by the minimum amount that would result in honoring the percentage.
<flex>
A non-negative dimension with the unit fr specifying the track’s flex factor. Each <flex>-sized track takes a share of the remaining space in proportion to its flex factor.
max-content
Represents the largest max-content contribution of the grid items occupying the grid track.
min-content
Represents the largest min-content contribution of the grid items occupying the grid track.
auto
As a maximum, identical to max-content. As a minimum it represents the largest minimum size (as specified by min-width/min-height) of the grid items occupying the grid track.

Formal syntax

minmax( [ <length> | <percentage> | min-content | max-content | auto ] , [ <length> | <percentage> | <flex> | min-content | max-content | auto ] )

CSS properties

minmax() function can be used within:

Examples

CSS

#container {
  display: grid;
  grid-template-columns: minmax(min-content, 300px) minmax(200px, 1fr) 150px;
  grid-gap: 5px;
  box-sizing: border-box;
  height: 200px;
  width: 100%;
  background-color: #8cffa0;
  padding: 10px;
}

#container > div {
  background-color: #8ca0ff;
  padding: 5px;
}

HTML

<div id="container">
  <div>
    Item as wide as the content, but at most 300 pixels.
  </div>
  <div>
    Item with flexible width but a minimum of 200 pixels.
  </div>
  <div>
    Inflexible item of 150 pixels width.
  </div>
</div>

Result

Specifications

Specification Status Comment
CSS Grid Layout
The definition of 'minmax()' in that specification.
Candidate Recommendation Initial definition

Browser compatibilityUpdate compatibility data on GitHub

Desktop
Chrome Edge Firefox Internet Explorer Opera Safari
minmax() 57
57
29
Disabled
Disabled From version 29: this feature is behind the Enable experimental Web Platform features preference. To change preferences in Chrome, visit chrome://flags.
16 52
52
40 — 59
Disabled
Disabled From version 40 until version 59 (exclusive): this feature is behind the layout.css.grid.enabled preference (needs to be set to true). To change preferences in Firefox, visit about:config.
No 44
44
28
Disabled
Disabled From version 28: this feature is behind the Enable experimental Web Platform features preference.
10.1
Mobile
Android webview Chrome for Android Firefox for Android Opera for Android Safari on iOS Samsung Internet
minmax() 57 57
57
29
Disabled
Disabled From version 29: this feature is behind the Enable experimental Web Platform features preference. To change preferences in Chrome, visit chrome://flags.
52
52
40 — 59
Disabled
Disabled From version 40 until version 59 (exclusive): this feature is behind the layout.css.grid.enabled preference (needs to be set to true). To change preferences in Firefox, visit about:config.
43
43
28
Disabled
Disabled From version 28: this feature is behind the Enable experimental Web Platform features preference.
10.3 6.0

See also

© 2005–2020 Mozilla and individual contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/CSS/minmax