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min-width

The min-width CSS property sets the minimum width of an element. It prevents the used value of the width property from becoming smaller than the value specified for min-width.

The element's width is set to the value of min-width whenever min-width is larger than max-width or width.

Syntax

/* <length> value */
min-width: 3.5em;

/* <percentage> value */
min-width: 10%;

/* Keyword values */
min-width: max-content;
min-width: min-content;
min-width: fit-content(20em);

/* Global values */
min-width: inherit;
min-width: initial;
min-width: unset;

Values

<length>
Defines the min-width as an absolute value.
<percentage>
Defines the min-width as a percentage of the containing block's width.
auto
The browser will calculate and select a min-width for the specified element.
max-content
The intrinsic preferred min-width.
min-content
The intrinsic minimum min-width.
fit-content(<length-percentage>)
Uses the fit-content formula with the available space replaced by the specified argument, i.e. min(max-content, max(min-content, argument)).

Formal definition

Initial value auto
Applies to all elements but non-replaced inline elements, table rows, and row groups
Inherited no
Percentages refer to the width of the containing block
Computed value the percentage as specified or the absolute length
Animation type a length, percentage or calc();

Formal syntax

auto | <length> | <percentage> | min-content | max-content | fit-content(<length-percentage>)

where
<length-percentage> = <length> | <percentage>

Examples

Setting minimum element width

table { min-width: 75%; }

form { min-width: 0; }

Specifications

Specification Status Comment
CSS Box Sizing Module Level 4
The definition of 'min-width' in that specification.
Editor's Draft
CSS Box Sizing Module Level 3
The definition of 'min-width' in that specification.
Working Draft Adds the max-content, min-content, fit-content keywords.
CSS Flexible Box Layout Module
The definition of 'min-width' in that specification.
Candidate Recommendation Adds the auto keyword and uses it as the initial value.
CSS Level 2 (Revision 1)
The definition of 'min-width' in that specification.
Recommendation Initial definition.

Browser compatibilityUpdate compatibility data on GitHub

Desktop
Chrome Edge Firefox Internet Explorer Opera Safari
min-width 1 12 1
1
CSS 2.1 leaves the behavior of min-width with table undefined. Firefox supports applying min-width to table elements.
7 4
4
CSS 2.1 leaves the behavior of min-width with table undefined. Opera supports applying min-width to table elements.
1
auto 21
21
Chrome uses auto as the initial value for min-width.
12
12
Edge uses auto as the initial value for min-width.
34
34
16 — 22
Firefox 18 and later (until the value was removed), used auto as the initial value for min-width.
No 12.1
12.1
Opera uses auto as the initial value for min-width.
No
fit-content 46
46
25
Prefixed
Prefixed Implemented with the vendor prefix: -webkit-
79
79
79
Prefixed
Prefixed Implemented with the vendor prefix: -webkit-
3
Prefixed
3
Prefixed
Prefixed Implemented with the vendor prefix: -moz-
Firefox implements the definitions given in CSS3 Basic Box. This defines available and not fit-available. Also, the definition of fit-content is simpler than in CSS3 Sizing.
No 33
33
15
Prefixed
Prefixed Implemented with the vendor prefix: -webkit-
11
11
6.1
Prefixed
Prefixed Implemented with the vendor prefix: -webkit-
max-content 46
46
25
Prefixed
Prefixed Implemented with the vendor prefix: -webkit-
79
79
79
Prefixed
Prefixed Implemented with the vendor prefix: -webkit-
66
66
3
Prefixed
Prefixed Implemented with the vendor prefix: -moz-
No 33
33
15
Prefixed
Prefixed Implemented with the vendor prefix: -webkit-
11
11
2
Uses the non-standard name: intrinsic
min-content 46
46
25
Prefixed
Prefixed Implemented with the vendor prefix: -webkit-
25 — 48
Uses the non-standard name: min-intrinsic
79
79
79
Prefixed
Prefixed Implemented with the vendor prefix: -webkit-
66
66
3
Prefixed
Prefixed Implemented with the vendor prefix: -moz-
No 33
33
≤15
Prefixed
Prefixed Implemented with the vendor prefix: -webkit-
≤15 — 35
Uses the non-standard name: min-intrinsic
11
11
2
Uses the non-standard name: min-intrinsic
stretch 22
22
Uses the non-standard name: -webkit-fill-available
79
79
Uses the non-standard name: -webkit-fill-available
No No 15
15
Uses the non-standard name: -webkit-fill-available
No
Mobile
Android webview Chrome for Android Firefox for Android Opera for Android Safari on iOS Samsung Internet
min-width 4.4 18 4
4
CSS 2.1 leaves the behavior of min-width with table undefined. Firefox supports applying min-width to table elements.
14 1 1.0
auto 37
37
Chrome uses auto as the initial value for min-width.
25
25
Chrome uses auto as the initial value for min-width.
34
34
16 — 22
Firefox 18 and later (until the value was removed), used auto as the initial value for min-width.
14
14
Opera uses auto as the initial value for min-width.
No 1.5
1.5
Samsung Internet uses auto as the initial value for min-width.
fit-content 46
46
≤37
Prefixed
Prefixed Implemented with the vendor prefix: -webkit-
46 4
Prefixed
4
Prefixed
Prefixed Implemented with the vendor prefix: -moz-
Firefox implements the definitions given in CSS3 Basic Box. This defines available and not fit-available. Also, the definition of fit-content is simpler than in CSS3 Sizing.
33 11
11
7
Prefixed
Prefixed Implemented with the vendor prefix: -webkit-
5.0
5.0
Uses the non-standard name: -webkit-fill-available
max-content 46
46
≤37
Prefixed
Prefixed Implemented with the vendor prefix: -webkit-
46 66
66
4
Prefixed
Prefixed Implemented with the vendor prefix: -moz-
33 11
11
1
Uses the non-standard name: intrinsic
5.0
min-content 46
46
≤37
Prefixed
Prefixed Implemented with the vendor prefix: -webkit-
≤37 — 48
Uses the non-standard name: min-intrinsic
46
46
25
Prefixed
Prefixed Implemented with the vendor prefix: -webkit-
25 — 48
Uses the non-standard name: min-intrinsic
66
66
4
Prefixed
Prefixed Implemented with the vendor prefix: -moz-
33
33
≤14
Prefixed
Prefixed Implemented with the vendor prefix: -webkit-
≤14 — 35
Uses the non-standard name: min-intrinsic
11
11
1
Uses the non-standard name: min-intrinsic
5.0
5.0
1.5
Prefixed
Prefixed Implemented with the vendor prefix: -webkit-
1.5 — 5.0
Uses the non-standard name: min-intrinsic
stretch 4.4
4.4
Uses the non-standard name: -webkit-fill-available
25
25
Uses the non-standard name: -webkit-fill-available
No 14
14
Uses the non-standard name: -webkit-fill-available
No 1.5
1.5
Uses the non-standard name: -webkit-fill-available

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/min-width