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
.
/* Keyword value */ height: auto; /* <length> values */ height: 120px; height: 10em; /* <percentage> value */ height: 75%; /* Global values */ height: inherit; height: initial; height: unset;
<length>
<percentage>
border-box
<length>
or <percentage>
is applied to the element's border box.content-box
<length>
or <percentage>
is applied to the element's content box.auto
fill
fill-available
inline size or fill-available
block size, as appropriate to the writing mode.max-content
min-content
available
fit-content
[ <length> | <percentage> ] && [ border-box | content-box ]? | available | min-content | max-content | fit-content | auto
<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>
div { width: 250px; margin-bottom: 5px; border: 2px solid blue; } #taller { height: 50px; } #shorter { height: 25px; } #parent { height: 100px; } #child { height: 50%; width: 75%; }
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.
Specification | Status | Comment |
---|---|---|
CSS Basic Box Model The definition of 'height' in that specification. | Working Draft | Added the max-content , min-content , available , fit-content , border-box , content-box keywords. |
CSS Transitions The definition of 'height' in that specification. | Working Draft | Lists height as animatable. |
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 1 The definition of 'height' in that specification. | Recommendation | Initial definition. |
CSS Intrinsic & Extrinsic Sizing Module Level 3 The definition of 'width' in that specification. | Working Draft | Adds new sizing keywords for width and height. |
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. |
Media | visual |
Computed value | a percentage or auto or the absolute length |
Animation type | a length, percentage or calc(); |
Canonical order | the unique non-ambiguous order defined by the formal grammar |
Desktop | ||||||
---|---|---|---|---|---|---|
Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | |
Basic support | 1 | 12 | 1 | 4 | 7 | 1 |
fill |
46 | ? | ? | ? | ? | ? |
fit-content |
46 | ? | ? | ? | ? | ? |
max-content |
46 | ? | ? | ? | ? | ? |
min-content |
46 | ? | ? | ? | ? | ? |
Mobile | |||||||
---|---|---|---|---|---|---|---|
Android webview | Chrome for Android | Edge Mobile | Firefox for Android | Opera for Android | iOS Safari | Samsung Internet | |
Basic support | 1 | 18 | Yes | 4 | 1 | 1 | Yes |
fill |
46 | 46 | ? | ? | ? | ? | 5.0 |
fit-content |
46 | 46 | ? | ? | ? | ? | 5.0 |
max-content |
46 | 46 | ? | ? | ? | ? | 5.0 |
min-content |
46 | 46 | ? | ? | ? | ? | 5.0 |
© 2005–2018 Mozilla Developer Network and individual contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/CSS/height