height
Baseline Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.
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
.
Note: As a geometric property, height
also applies to the <svg>
, <rect>
, <image>
, and <foreignObject>
SVG elements, with auto
resolving to 0
and percent values being relative to the SVG viewport height for <rect>
. The CSS height
property value overrides any SVG height
attribute value set on the SVG element.
Syntax
/* <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));
height: stretch;
/* Global values */
height: inherit;
height: initial;
height: revert;
height: revert-layer;
height: unset;
Values
<length>
-
Defines the height as a distance 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
-
Use the available space, but not more than max-content, i.e.
min(max-content, max(min-content, stretch))
. 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, <length-percentage>))
. stretch
-
Sets the height of the element's margin box to the height of its containing block. It attempts to make the margin box fill the available space in the containing block, so in a way behaving similar to
100%
but applying the resulting size to the margin box rather than the box determined by box-sizing.Note: To check aliases used by browsers for the
stretch
value and its implementation status, see the Browser compatibility section.
Accessibility
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,∞]> ) |
<calc-size()> |
<anchor-size()>
<length-percentage> =
<length> |
<percentage>
<calc-size()> =
calc-size( <calc-size-basis> , <calc-sum> )
<anchor-size()> =
anchor-size( [ <anchor-name> || <anchor-size> ]? , <length-percentage>? )
<calc-size-basis> =
<intrinsic-size-keyword> |
<calc-size()> |
any |
<calc-sum>
<calc-sum> =
<calc-product> [ [ '+' | '-' ] <calc-product> ]*
<anchor-name> =
<dashed-ident>
<anchor-size> =
width |
height |
block |
inline |
self-block |
self-inline
<calc-product> =
<calc-value> [ [ '*' | '/' ] <calc-value> ]*
<calc-value> =
<number> |
<dimension> |
<percentage> |
<calc-keyword> |
( <calc-sum> )
<calc-keyword> =
e |
pi |
infinity |
-infinity |
NaN
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 |
---|
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