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.

Try it

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


/* <length> values */
height: 120px;
height: 10em;
height: 100vh;
height: anchor-size(height);
height: anchor-size(--myAnchor self-block, 250px);
height: clamp(200px, anchor-size(width));

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

/* Keyword values */
height: max-content;
height: min-content;
height: fit-content;
height: fit-content(20em);
height: auto;
height: minmax(min-content, anchor-size(width));

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



Defines the height as a distance 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.


Use the available space, but not more than max-content, i.e min(max-content, max(min-content, stretch)).


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

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 valueauto
Applies toall elements but non-replaced inline elements, table columns, and column groups
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();

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%;



CSS Box Sizing Module Level 3
# preferred-size-properties
CSS Box Sizing Module Level 4
# sizing-values

Browser compatibility

BCD tables only load in the browser

See also