height

The height CSS property specifies the height of an element. By default, the property defines the height of the content area. If box-sizing is set to border-box, however, it instead determines the height of the border area.

The min-height and max-height properties override height.

Syntax

/* Keyword value */
height: auto;

/* <length> values */
height: 120px;
height: 10em;

/* <percentage> value */
height: 75%;

/* Global values */
height: inherit;
height: initial;
height: unset;

Values

<length>
Defines the height as an absolute value.
<percentage>
Defines the height as a percentage of the containing block's height.
auto
The browser will calculate and select a height for the specified element.
max-content
The intrinsic preferred height.
min-content
The intrinsic minimum height.
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, )).

Formal syntax

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

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

Example

HTML

<div id="taller">I'm 50 pixels tall.</div>
<div id="shorter">I'm 25 pixels tall.</div>
<div id="parent">
  <div id="child">
    I'm half the height of my parent.
  </div>
</div>

CSS

div {
  width: 250px;
  margin-bottom: 5px;
  border: 2px solid blue;
}

#taller {
  height: 50px;
}

#shorter {
  height: 25px;
}

#parent {
  height: 100px;
}

#child {
  height: 50%;
  width: 75%;
}

Result

Accessibility concerns

Ensure that elementsĀ set with a height are not truncated and/or do not obscure other content when the page is zoomed to increase text size.Ā 

SpecificationsĀ 

Specification Status Comment
CSS Intrinsic & Extrinsic Sizing Module LevelĀ 4
The definition of 'height' in that specification.
Editor's Draft
CSS Intrinsic & Extrinsic Sizing Module LevelĀ 3
The definition of 'height' in that specification.
Working Draft Added the max-content, min-content,Ā fit-content keywords.
CSS LevelĀ 2 (RevisionĀ 1)
The definition of 'height' in that specification.
Recommendation Adds support for the <length> values and precises on which element it applies to.
CSS LevelĀ 1
The definition of 'height' in that specification.
Recommendation Initial definition.
Initial valueauto
Applies toall elements but non-replaced inline elements, table columns, and column groups
Inheritedno
PercentagesThe percentage is calculated with respect to the height of the generated box's containing block. If the height of the containing block is not specified explicitly (i.e., it depends on content height), and this element is not absolutely positioned, the value computes to auto. A percentage height on the root element is relative to the initial containing block.
Computed valuea percentage or auto or the absolute length
Animation typea length, percentage or calc();

Browser compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
heightChrome Full support 1Edge Full support 12Firefox Full support 1IE Full support 4Opera Full support 7Safari Full support 1WebView Android Full support 1Chrome Android Full support 18Firefox Android Full support 4Opera Android Full support 10.1Safari iOS Full support 1Samsung Internet Android Full support 1.0
fit-contentChrome Full support 46Edge Full support 79Firefox No support NoIE No support NoOpera Full support 33Safari Full support 11
Full support 11
Full support 9
Prefixed
Prefixed Implemented with the vendor prefix: -webkit-
WebView Android Full support 46Chrome Android Full support 46Firefox Android No support NoOpera Android Full support 33Safari iOS Full support 11
Full support 11
Full support 9
Prefixed
Prefixed Implemented with the vendor prefix: -webkit-
Samsung Internet Android Full support 5.0
max-contentChrome Full support 46Edge Full support 79Firefox Full support 66
Full support 66
Full support 3
Prefixed
Prefixed Implemented with the vendor prefix: -moz-
IE No support NoOpera Full support 44Safari Full support 11WebView Android Full support 46Chrome Android Full support 46Firefox Android Full support 66
Full support 66
Full support 4
Prefixed
Prefixed Implemented with the vendor prefix: -moz-
Opera Android Full support 43Safari iOS Full support 11Samsung Internet Android Full support 5.0
min-contentChrome Full support 46Edge Full support 79Firefox Full support 66
Full support 66
Full support 3
Prefixed
Prefixed Implemented with the vendor prefix: -moz-
IE No support NoOpera Full support 44Safari Full support 11WebView Android Full support 46Chrome Android Full support 46Firefox Android Full support 66
Full support 66
Full support 4
Prefixed
Prefixed Implemented with the vendor prefix: -moz-
Opera Android Full support 43Safari iOS Full support 11Samsung Internet Android Full support 5.0
stretchChrome Full support 28
Alternate Name
Full support 28
Alternate Name
Alternate Name Uses the non-standard name: -webkit-fill-available
Edge Full support 79
Alternate Name
Full support 79
Alternate Name
Alternate Name Uses the non-standard name: -webkit-fill-available
Firefox No support NoIE No support NoOpera Full support 15
Alternate Name
Full support 15
Alternate Name
Alternate Name Uses the non-standard name: -webkit-fill-available
Safari Full support 9
Alternate Name
Full support 9
Alternate Name
Alternate Name Uses the non-standard name: -webkit-fill-available
WebView Android Full support 4.4
Alternate Name
Full support 4.4
Alternate Name
Alternate Name Uses the non-standard name: -webkit-fill-available
Chrome Android Full support 28
Alternate Name
Full support 28
Alternate Name
Alternate Name Uses the non-standard name: -webkit-fill-available
Firefox Android No support NoOpera Android Full support 15
Alternate Name
Full support 15
Alternate Name
Alternate Name Uses the non-standard name: -webkit-fill-available
Safari iOS Full support 9
Alternate Name
Full support 9
Alternate Name
Alternate Name Uses the non-standard name: -webkit-fill-available
Samsung Internet Android Full support 5.0
Alternate Name
Full support 5.0
Alternate Name
Alternate Name Uses the non-standard name: -webkit-fill-available

Legend

Full support Ā 
Full support
No support Ā 
No support
Uses a non-standard name.
Uses a non-standard name.
Requires a vendor prefix or different name for use.
Requires a vendor prefix or different name for use.

See also