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---
title: object-fit
slug: Web/CSS/object-fit
translation_of: Web/CSS/object-fit
---
<div>{{CSSRef}}</div>
<h2 id="Summary" name="Summary">Summary</h2>
<p>The <strong><code>object-fit</code></strong> CSS property specifies how the contents of a replaced element should be fitted to the box established by its used height and width.</p>
<p>物件契合(<strong><code>object-fit)</code></strong>CSS屬性能指定置換元素(replaced element)的內容要如何契合、安裝到其使用的高度和寬度已確定的框。</p>
<p> </p>
<p>{{cssinfo}}</p>
<h2 id="Syntax" name="Syntax">Syntax</h2>
<pre class="brush:css">/* Keyword values */
object-fit: fill;
object-fit: contain;
object-fit: cover;
object-fit: none;
object-fit: scale-down;
/* Global values */
object-fit: inherit;
object-fit: initial;
object-fit: unset;
</pre>
<h3 id="Values" name="Values">Values</h3>
<dl>
<dt><code>fill</code></dt>
<dd>The replaced content is sized to fill the element’s content box: the object’s concrete object size is the element’s used width and height.</dd>
<dt><code>contain</code></dt>
<dd>The replaced content is sized to maintain its aspect ratio while fitting within the element’s content box: its concrete object size is resolved as a contain constraint against the element’s used width and height.</dd>
<dt><code>cover</code></dt>
<dd>The replaced content is sized to maintain its aspect ratio while filling the element’s entire content box: its concrete object size is resolved as a cover constraint against the element’s used width and height.</dd>
<dt><code>none</code></dt>
<dd>The replaced content is not resized to fit inside the element’s content box: the object’s concrete object size is determined using the default sizing algorithm with no specified size, and a default object size equal to the replaced element’s used width and height.</dd>
<dt><code>scale-down</code></dt>
<dd>The content is sized as if <code>none</code> or <code>contain</code> were specified, whichever would result in a smaller concrete object size.</dd>
</dl>
<h3 id="Formal_syntax">Formal syntax</h3>
<pre class="syntaxbox">{{csssyntax}}</pre>
<h2 id="Example" name="Example">Example</h2>
<h3 id="HTML_Content">HTML Content</h3>
<pre class="brush: html"><div>
<h2>object-fit: fill</h2>
<img src="https://mdn.mozillademos.org/files/6457/mdn_logo_only_color.png" alt="MDN Logo" class="fill"/>
<img src="https://mdn.mozillademos.org/files/6457/mdn_logo_only_color.png" alt="MDN Logo" class="fill narrow"/>
<h2>object-fit: contain</h2>
<img src="https://mdn.mozillademos.org/files/6457/mdn_logo_only_color.png" alt="MDN Logo" class="contain"/>
<img src="https://mdn.mozillademos.org/files/6457/mdn_logo_only_color.png" alt="MDN Logo" class="contain narrow"/>
<h2>object-fit: cover</h2>
<img src="https://mdn.mozillademos.org/files/6457/mdn_logo_only_color.png" alt="MDN Logo" class="cover"/>
<img src="https://mdn.mozillademos.org/files/6457/mdn_logo_only_color.png" alt="MDN Logo" class="cover narrow"/>
<h2>object-fit: none</h2>
<img src="https://mdn.mozillademos.org/files/6457/mdn_logo_only_color.png" alt="MDN Logo" class="none"/>
<img src="https://mdn.mozillademos.org/files/6457/mdn_logo_only_color.png" alt="MDN Logo" class="none narrow"/>
<h2>object-fit: scale-down</h2>
<img src="https://mdn.mozillademos.org/files/6457/mdn_logo_only_color.png" alt="MDN Logo" class="scale-down"/>
<img src="https://mdn.mozillademos.org/files/6457/mdn_logo_only_color.png" alt="MDN Logo" class="scale-down narrow"/>
</div></pre>
<h3 id="CSS_Content">CSS Content</h3>
<pre class="brush: css">h2 {
font-family: Courier New, monospace;
font-size: 1em;
margin: 1em 0 0.3em;
}
div {
display: flex;
flex-direction: column;
flex-wrap: wrap;
align-items: flex-start;
height: 940px;
}
img {
width: 150px;
height: 100px;
border: 1px solid #000;
}
.narrow {
width: 100px;
height: 150px;
margin-top: 10px;
}
.fill {
object-fit: fill;
}
.contain {
object-fit: contain;
}
.cover {
object-fit: cover;
}
.none {
object-fit: none;
}
.scale-down {
object-fit: scale-down;
}
</pre>
<h3 id="Output">Output</h3>
<p>{{ EmbedLiveSample('Example', 500, 450) }}</p>
<h2 id="Specifications" name="Specifications">Specifications</h2>
<table class="standard-table">
<thead>
<tr>
<th scope="col">Specification</th>
<th scope="col">Status</th>
<th scope="col">Comment</th>
</tr>
</thead>
<tbody>
<tr>
<td>{{SpecName('CSS4 Images', '#the-object-fit', 'object-fit')}}</td>
<td>{{Spec2('CSS4 Images')}}</td>
<td>The <code>from-image</code> and <code>flip</code> keywords have been added.</td>
</tr>
<tr>
<td>{{SpecName('CSS3 Images', '#the-object-fit', 'object-fit')}}</td>
<td>{{Spec2('CSS3 Images')}}</td>
<td>Initial definition</td>
</tr>
</tbody>
</table>
<h2 id="Browser_compatibility" name="Browser_compatibility">Browser compatibility</h2>
<p>{{ CompatibilityTable }}</p>
<div id="compat-desktop">
<table class="compat-table">
<tbody>
<tr>
<th>Feature</th>
<th>Chrome</th>
<th>Firefox (Gecko)</th>
<th>Internet Explorer</th>
<th>Opera</th>
<th>Safari</th>
</tr>
<tr>
<td>Basic support</td>
<td>31.0</td>
<td>{{ CompatGeckoDesktop("36") }}</td>
<td>{{CompatNo}}</td>
<td>11.60{{ property_prefix("-o") }}<br>
19.0</td>
<td>{{ CompatVersionUnknown }}</td>
</tr>
</tbody>
</table>
</div>
<div id="compat-mobile">
<table class="compat-table">
<tbody>
<tr>
<th>Feature</th>
<th>Android</th>
<th>Firefox Mobile (Gecko)</th>
<th>IE Mobile</th>
<th>Opera Mobile</th>
<th>Safari Mobile</th>
</tr>
<tr>
<td>Basic support</td>
<td>4.4.4</td>
<td>{{ CompatGeckoDesktop("36") }}</td>
<td>{{CompatNo}}</td>
<td>11.5{{ property_prefix("-o") }}<br>
24</td>
<td>{{ CompatVersionUnknown }}</td>
</tr>
</tbody>
</table>
</div>
<h2 id="See_also" name="See_also">See also</h2>
<ul>
<li>Other image-related CSS properties: {{cssxref("object-position")}}, {{cssxref("image-orientation")}}, {{cssxref("image-rendering")}}, {{cssxref("image-resolution")}}.</li>
</ul>
|
