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.


/* <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: revert;
min-width: unset;


Defines the min-width as an absolute value.
Defines the min-width as a percentage of the containing block's width.
The browser will calculate and select a min-width for the specified element.
The intrinsic preferred min-width.
The intrinsic minimum min-width.
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 valueauto
Applies toall elements but non-replaced inline elements, table rows, and row groups
Percentagesrefer to the width of the containing block
Computed valuethe percentage as specified or the absolute length
Animation typea length, percentage or calc();

Formal syntax

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

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


Setting minimum element width

table { min-width: 75%; }

form { min-width: 0; }


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 compatibility

BCD tables only load in the browser

See also