inline-size

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

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Syntax

/* <length> values */
inline-size: 300px;
inline-size: 25em;

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

/* Keyword values */
inline-size: 25em border-box;
inline-size: 75% content-box;
inline-size: max-content;
inline-size: min-content;
inline-size: available;
inline-size: fit-content;
inline-size: auto;

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

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

Values

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

Formal syntax

<'width'>

Example

HTML

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

CSS

.exampleText {
  writing-mode: vertical-rl;
  background-color: yellow;
  inline-size: 110px;
}

Specification

Browser compatibility 

See also

• The mapped physical properties: width and height
• writing-mode