max-inline-size

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

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

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Syntax

css
/* <length> values */
max-inline-size: 300px;
max-inline-size: 25em;
max-inline-size: anchor-size(width);
max-inline-size: anchor-size(--myAnchor self-block, 200px);

/* <percentage> values */
max-inline-size: 75%;

/* Keyword values */
max-inline-size: none;
max-inline-size: max-content;
max-inline-size: min-content;
max-inline-size: fit-content;
max-inline-size: fit-content(20em);

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

Values

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

Formal definition

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

Formal syntax

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

<max-width> = 
none                                      |
<length-percentage [0,∞]>                 |
min-content                               |
max-content                               |
fit-content( <length-percentage [0,∞]> )  |
<calc-size()>                             

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

<calc-size()> = 
calc-size( <calc-size-basis> , <calc-sum> )  

<calc-size-basis> = 
<intrinsic-size-keyword>  |
<calc-size()>             |
any                       |
<calc-sum>                

<calc-sum> = 
<calc-product> [ [ '+' | '-' ] <calc-product> ]*  

<calc-product> = 
<calc-value> [ [ '*' | '/' ] <calc-value> ]*  

<calc-value> = 
<number>        |
<dimension>     |
<percentage>    |
<calc-keyword>  |
  ( <calc-sum> )  

<calc-keyword> = 
e          |
pi         |
infinity   |
-infinity  |
NaN

Examples

Setting maximum inline size in pixels

HTML

html
<p class="exampleText">Example text</p>

CSS

css
.exampleText {
  writing-mode: vertical-rl;
  background-color: yellow;
  block-size: 100%;
  max-inline-size: 200px;
}

Result

Specifications

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

Browser compatibility

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See also