Web/CSS/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, )).

Accessibility concerns

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

Formal definition

Initial value	`auto`
Applies to	all elements but non-replaced inline elements, table columns, and column groups
Inherited	no
Percentages	The 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 value	a percentage or `auto` or the absolute length
Animation type	a length, percentage or calc();

Formal syntax

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

Examples

Setting height using pixels and percentages

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

Specifications

Specification	Status	Comment
CSS Box Sizing Module Level 4The definition of 'height' in that specification.	Editor's Draft
CSS Box Sizing Module Level 3The definition of 'height' in that specification.	Working Draft	Added the `max-content`, `min-content`, `fit-content` keywords.
CSS Level 2 (Revision 1)The definition of 'height' in that specification.	Recommendation	Adds support for the `<length>` values and precises on which element it applies to.
CSS Level 1The definition of 'height' in that specification.	Recommendation	Initial definition.

Browser compatibility

Update compatibility data on GitHub

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`height`	Chrome Full support 1	Edge Full support 12	Firefox Full support 1	IE Full support 4	Opera Full support 7	Safari Full support 1	WebView Android Full support 1	Chrome Android Full support 18	Firefox Android Full support 4	Opera Android Full support 10.1	Safari iOS Full support 1	Samsung Internet Android Full support 1.0
`fit-content`	Chrome Full support 46	Edge Full support 79	Firefox No support No	IE No support No	Opera Full support 33	Safari Full support 11 Full support 11 Full support 9 Prefixed' Prefixed' Implemented with the vendor prefix: -webkit-	WebView Android Full support 46	Chrome Android Full support 46	Firefox Android No support No	Opera Android Full support 33	Safari 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-content`	Chrome Full support 46	Edge Full support 79	Firefox Full support 66 Full support 66 Full support 3 Prefixed' Prefixed' Implemented with the vendor prefix: -moz-	IE No support No	Opera Full support 44	Safari Full support 11	WebView Android Full support 46	Chrome Android Full support 46	Firefox Android Full support 66 Full support 66 Full support 4 Prefixed' Prefixed' Implemented with the vendor prefix: -moz-	Opera Android Full support 43	Safari iOS Full support 11	Samsung Internet Android Full support 5.0
`min-content`	Chrome Full support 46	Edge Full support 79	Firefox Full support 66 Full support 66 Full support 3 Prefixed' Prefixed' Implemented with the vendor prefix: -moz-	IE No support No	Opera Full support 44	Safari Full support 11	WebView Android Full support 46	Chrome Android Full support 46	Firefox Android Full support 66 Full support 66 Full support 4 Prefixed' Prefixed' Implemented with the vendor prefix: -moz-	Opera Android Full support 43	Safari iOS Full support 11	Samsung Internet Android Full support 5.0
`stretch`	Chrome 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 No	IE No support No	Opera 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 No	Opera 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: Full support
No support: 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.