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.

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


/* <length> values */
height: 120px;
height: 10em;
height: 100vh;

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

/* Keyword values */
height: max-content;
height: min-content;
height: fit-content(20em);
height: auto;

/* Global values */
height: inherit;
height: initial;
height: revert;
height: revert-layer;
height: unset;



Defines the height as an absolute value.


Defines the height as a percentage of the containing block's height.


The browser will calculate and select a height for the specified element.


The intrinsic preferred height.


The intrinsic minimum height.


Box will use the available space, but never more than max-content


Uses the fit-content formula with the available space replaced by the specified argument, i.e. min(max-content, max(min-content, <length-percentage>))


Enables selecting a middle value within a range of values between a defined minimum and maximum

Accessibility concerns

Ensure that elements set with a height aren't truncated and/or don't 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

height = 
auto |
<length-percentage [0,∞]> |
min-content |
max-content |
fit-content( <length-percentage [0,∞]> )

<length-percentage> =
<length> |


Setting height using pixels and percentages


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

#taller {
  height: 50px;

#shorter {
  height: 25px;

#parent {
  height: 100px;

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



Browser compatibility

Desktop Mobile
Chrome Edge Firefox Internet Explorer Opera Safari WebView Android Chrome Android Firefox for Android Opera Android Safari on IOS Samsung Internet
height 1 12 1 4 7 1 4.4 18 4 10.1 1 1.0
fit-content 46 79 No No 33 119 46 46 No 33 119 5.0
fit-content_function No No 91 No No No No No No No No No
max-content 46 79 663 No 44 11 46 46 664 43 11 5.0
min-content 46 79 663 No 44 11 46 46 664 43 11 5.0
stretch 28 79 No No 15 9 4.4 28 No 15 9 5.0

See also

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