min-inline-size

Baseline Widely available *

This feature is well established and works across many devices and browser versions. It’s been available across browsers since January 2020.

* Some parts of this feature may have varying levels of support.

The min-inline-size CSS property defines the horizontal or vertical minimal size of an element's block, depending on its writing mode. It corresponds to either the min-width or the min-height property, depending on the value of writing-mode.

Try it

min-inline-size: 200px;
writing-mode: horizontal-tb;
min-inline-size: 200px;
writing-mode: vertical-rl;
min-inline-size: 20px;
writing-mode: horizontal-tb;
min-inline-size: 75%;
writing-mode: vertical-lr;
Change min-inline-size
#example-element {
  display: flex;
  flex-direction: column;
  background-color: #5b6dcd;
  height: 80%;
  justify-content: center;
  color: #ffffff;
}

Syntax

css
/*  values */
min-inline-size: 100px;
min-inline-size: 5em;
min-inline-size: anchor-size(width);

/*  values */
min-inline-size: 10%;

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

/* Global values */
min-inline-size: inherit;
min-inline-size: initial;
min-inline-size: revert;
min-inline-size: revert-layer;
min-inline-size: unset;

If the writing mode is vertically oriented, the value of min-inline-size relates to the minimum height of the element; otherwise, it relates to the minimum width of the element. A related property is min-block-size, which defines the other dimension of the element.

Values

The min-inline-size property takes the same values as the min-width and min-height properties.

Formal definition

Initial value0
Applies tosame as width and height
Inheritedno
Percentagesinline-size of containing block
Computed valuesame as min-width and min-height
Animation typea length, percentage or calc();

Formal syntax

min-inline-size = 
<'min-width'>

=
auto |
|
min-content |
max-content |
fit-content( ) |
|


=
|


=
calc-size( , )

=
anchor-size( [ || ]? , ? )

=
|
|
any |


=
[ [ '+' | '-' ] ]*

=


=
width |
height |
block |
inline |
self-block |
self-inline

=
[ [ '*' | / ] ]*

=
|
|
|
|
( )

=
e |
pi |
infinity |
-infinity |
NaN

Examples

Setting minimum inline size for vertical text

HTML

html

Example text

CSS

css
.exampleText {
  writing-mode: vertical-rl;
  background-color: yellow;
  block-size: 5%;
  min-inline-size: 200px;
}

Result

Specifications

Specification
CSS Logical Properties and Values Level 1
# propdef-min-inline-size
CSS Box Sizing Module Level 4
# sizing-values

Browser compatibility

See also