height
Quick Summary for height
The <strong><code>height</code></strong> CSS property specifies the height of an element. By default, the property defines the height of the <a href="/en-US/docs/Web/CSS/CSSBoxModel/IntroductiontotheCSSboxmodel#contentarea">content area</a>. If <a href="/en-US/docs/Web/CSS/box-sizing"><code>box-sizing</code></a> is set to <code>border-box</code>, however, it instead determines the height of the <a href="/en-US/docs/Web/CSS/CSSBoxModel/IntroductiontotheCSSboxmodel#borderarea">border area</a>.
Code Usage for height
<pre class="brush: css notranslate"><code><span class="token comment">/ <length> values /</span> <span class="token property">height</span><span class="token punctuation">:</span> 120px<span class="token punctuation">;</span> <span class="token property">height</span><span class="token punctuation">:</span> 10em<span class="token punctuation">;</span> <span class="token comment">/ <percentage> value /</span> <span class="token property">height</span><span class="token punctuation">:</span> 75%<span class="token punctuation">;</span> <span class="token comment">/ Keyword values /</span> <span class="token property">height</span><span class="token punctuation">:</span> max-content<span class="token punctuation">;</span> <span class="token property">height</span><span class="token punctuation">:</span> min-content<span class="token punctuation">;</span> <span class="token property">height</span><span class="token punctuation">:</span> <span class="token function">fit-content</span><span class="token punctuation">(</span>20em<span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token property">height</span><span class="token punctuation">:</span> auto<span class="token punctuation">;</span> <span class="token comment">/ Global values /</span> <span class="token property">height</span><span class="token punctuation">:</span> inherit<span class="token punctuation">;</span> <span class="token property">height</span><span class="token punctuation">:</span> initial<span class="token punctuation">;</span> <span class="token property">height</span><span class="token punctuation">:</span> revert<span class="token punctuation">;</span> <span class="token property">height</span><span class="token punctuation">:</span> unset<span class="token punctuation">;</span> </code></pre>
More Details for height
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
/* <length> values */ height: 120px; height: 10em; /* <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: 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, <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 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 | 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> div { width: 250px; margin-bottom: 5px; border: 2px solid blue; } #taller { height: 50px; } #shorter { height: 25px; } #parent { height: 100px; } #child { height: 50%; width: 75%; } Specifications
| Specification |
|---|
| CSS Box Sizing Module Level 3 # preferred-size-properties |
See also
The box modelwidth box-sizing min-height, max-height The mapped logical properties: block-size, inline-size Last modified: Aug 12, 2021, by MDN contributors
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