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| author | Craig Jennings <c@cjennings.net> | 2024-04-07 13:41:34 -0500 |
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| committer | Craig Jennings <c@cjennings.net> | 2024-04-07 13:41:34 -0500 |
| commit | 754bbf7a25a8dda49b5d08ef0d0443bbf5af0e36 (patch) | |
| tree | f1190704f78f04a2b0b4c977d20fe96a828377f1 /devdocs/html/element%2Fstyle.html | |
new repository
Diffstat (limited to 'devdocs/html/element%2Fstyle.html')
| -rw-r--r-- | devdocs/html/element%2Fstyle.html | 230 |
1 files changed, 230 insertions, 0 deletions
diff --git a/devdocs/html/element%2Fstyle.html b/devdocs/html/element%2Fstyle.html new file mode 100644 index 00000000..b6d28bea --- /dev/null +++ b/devdocs/html/element%2Fstyle.html @@ -0,0 +1,230 @@ +<header><h1><style>: The Style Information element</h1></header><div class="section-content"><p>The <code><style></code> <a href="../index">HTML</a> element contains style information for a document, or part of a document. It contains CSS, which is applied to the contents of the document containing the <code><style></code> element.</p></div> +<h2 id="try_it">Try it</h2> +<div class="section-content"> +<iframe class="interactive is-tabbed-standard-height" height="200" src="https://interactive-examples.mdn.mozilla.net/pages/tabbed/style.html" title="MDN Web Docs Interactive Example" loading="lazy"></iframe> <p>The <code><style></code> element must be included inside the <a href="head"><code><head></code></a> of the document. In general, it is better to put your styles in external stylesheets and apply them using <a href="link"><code><link></code></a> elements.</p> <p>If you include multiple <code><style></code> and <code><link></code> elements in your document, they will be applied to the DOM in the order they are included in the document — make sure you include them in the correct order, to avoid unexpected cascade issues.</p> <p>In the same manner as <code><link></code> elements, <code><style></code> elements can include <code>media</code> attributes that contain <a href="https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_media_queries">media queries</a>, allowing you to selectively apply internal stylesheets to your document depending on media features such as viewport width.</p> +</div> +<h2 id="attributes">Attributes</h2> +<div class="section-content"> +<p>This element includes the <a href="../global_attributes">global attributes</a>.</p> <dl> <dt id="blocking"> +<a href="#blocking"><code>blocking</code></a> <abbr class="icon icon-experimental" title="Experimental. Expect behavior to change in the future."> <span class="visually-hidden">Experimental</span> </abbr> +</dt> <dd> <p>This attribute explicitly indicates that certain operations should be blocked on the fetching of critical subresources. <a href="https://developer.mozilla.org/en-US/docs/Web/CSS/@import"><code>@import</code></a>-ed stylesheets are generally considered as critical subresources, whereas <a href="https://developer.mozilla.org/en-US/docs/Web/CSS/background-image"><code>background-image</code></a> and fonts are not.</p> <ul> <li> +<code>render</code>: The rendering of content on the screen is blocked.</li> </ul> </dd> <dt id="media"><a href="#media"><code>media</code></a></dt> <dd> <p>This attribute defines which media the style should be applied to. Its value is a <a href="https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_media_queries/Using_media_queries">media query</a>, which defaults to <code>all</code> if the attribute is missing.</p> </dd> <dt id="nonce"><a href="#nonce"><code>nonce</code></a></dt> <dd> <p>A cryptographic nonce (number used once) used to allow inline styles in a <a href="https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/style-src">style-src Content-Security-Policy</a>. The server must generate a unique nonce value each time it transmits a policy. It is critical to provide a nonce that cannot be guessed as bypassing a resource's policy is otherwise trivial.</p> </dd> <dt id="title"><a href="#title"><code>title</code></a></dt> <dd> <p>This attribute specifies <a href="https://developer.mozilla.org/en-US/docs/Web/CSS/Alternative_style_sheets">alternative style sheet</a> sets.</p> </dd> </dl> +</div> +<h3 id="deprecated_attributes">Deprecated attributes</h3> +<div class="section-content"><dl> <dt id="type"> +<a href="#type"><code>type</code></a> <abbr class="icon icon-deprecated" title="Deprecated. Not for use in new websites."> <span class="visually-hidden">Deprecated</span> </abbr> +</dt> <dd> <p>This attribute should not be provided: if it is, the only permitted values are the empty string or a case-insensitive match for <code>text/css</code>.</p> </dd> </dl></div> +<h2 id="examples">Examples</h2> + +<h3 id="a_simple_stylesheet">A simple stylesheet</h3> +<div class="section-content"> +<p>In the following example, we apply a very simple stylesheet to a document:</p> <div class="code-example"> +<p class="example-header"><span class="language-name">html</span></p> +<pre data-signature="Xp1eBLnbRbAAjqyTCFNTrBNTWck3M+5AxtWVn52AbH8=" data-language="html"><span class="token doctype"><span class="token punctuation"><!</span><span class="token doctype-tag">doctype</span> <span class="token name">html</span><span class="token punctuation">></span></span> +<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>html</span> <span class="token attr-name">lang</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>en-US<span class="token punctuation">"</span></span><span class="token punctuation">></span></span> + <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>head</span><span class="token punctuation">></span></span> + <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>meta</span> <span class="token attr-name">charset</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>UTF-8<span class="token punctuation">"</span></span> <span class="token punctuation">/></span></span> + <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>title</span><span class="token punctuation">></span></span>Test page<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>title</span><span class="token punctuation">></span></span> + <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>style</span><span class="token punctuation">></span></span><span class="token style"><span class="token language-css"> + <span class="token selector">p</span> <span class="token punctuation">{</span> + <span class="token property">color</span><span class="token punctuation">:</span> red<span class="token punctuation">;</span> + <span class="token punctuation">}</span> + </span></span><span class="token tag"><span class="token tag"><span class="token punctuation"></</span>style</span><span class="token punctuation">></span></span> + <span class="token tag"><span class="token tag"><span class="token punctuation"></</span>head</span><span class="token punctuation">></span></span> + <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>body</span><span class="token punctuation">></span></span> + <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>p</span><span class="token punctuation">></span></span>This is my paragraph.<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>p</span><span class="token punctuation">></span></span> + <span class="token tag"><span class="token tag"><span class="token punctuation"></</span>body</span><span class="token punctuation">></span></span> +<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>html</span><span class="token punctuation">></span></span> +</pre> +</div> <h4 id="result">Result</h4> +<div class="code-example" id="sect1"> + +<iframe class="sample-code-frame" title="A simple stylesheet sample" id="frame_a_simple_stylesheet" width="100%" height="100" src="https://live.mdnplay.dev/en-US/docs/Web/HTML/Element/style/runner.html?id=a_simple_stylesheet" loading="lazy"></iframe> +</div> +</div> +<h3 id="multiple_style_elements">Multiple style elements</h3> +<div class="section-content"> +<p>In this example we've included two <code><style></code> elements — notice how the conflicting declarations in the later <code><style></code> element override those in the earlier one, if they have equal <a href="https://developer.mozilla.org/en-US/docs/Web/CSS/Specificity">specificity</a>.</p> <div class="code-example"> +<p class="example-header"><span class="language-name">html</span></p> +<pre data-signature="HUSNAFh8BZIdBF/hp4GoX4t+HEJOnqLW1Khlt/2VJ14=" data-language="html"><span class="token doctype"><span class="token punctuation"><!</span><span class="token doctype-tag">doctype</span> <span class="token name">html</span><span class="token punctuation">></span></span> +<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>html</span> <span class="token attr-name">lang</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>en-US<span class="token punctuation">"</span></span><span class="token punctuation">></span></span> + <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>head</span><span class="token punctuation">></span></span> + <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>meta</span> <span class="token attr-name">charset</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>UTF-8<span class="token punctuation">"</span></span> <span class="token punctuation">/></span></span> + <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>title</span><span class="token punctuation">></span></span>Test page<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>title</span><span class="token punctuation">></span></span> + <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>style</span><span class="token punctuation">></span></span><span class="token style"><span class="token language-css"> + <span class="token selector">p</span> <span class="token punctuation">{</span> + <span class="token property">color</span><span class="token punctuation">:</span> white<span class="token punctuation">;</span> + <span class="token property">background-color</span><span class="token punctuation">:</span> blue<span class="token punctuation">;</span> + <span class="token property">padding</span><span class="token punctuation">:</span> 5px<span class="token punctuation">;</span> + <span class="token property">border</span><span class="token punctuation">:</span> 1px solid black<span class="token punctuation">;</span> + <span class="token punctuation">}</span> + </span></span><span class="token tag"><span class="token tag"><span class="token punctuation"></</span>style</span><span class="token punctuation">></span></span> + <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>style</span><span class="token punctuation">></span></span><span class="token style"><span class="token language-css"> + <span class="token selector">p</span> <span class="token punctuation">{</span> + <span class="token property">color</span><span class="token punctuation">:</span> blue<span class="token punctuation">;</span> + <span class="token property">background-color</span><span class="token punctuation">:</span> yellow<span class="token punctuation">;</span> + <span class="token punctuation">}</span> + </span></span><span class="token tag"><span class="token tag"><span class="token punctuation"></</span>style</span><span class="token punctuation">></span></span> + <span class="token tag"><span class="token tag"><span class="token punctuation"></</span>head</span><span class="token punctuation">></span></span> + <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>body</span><span class="token punctuation">></span></span> + <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>p</span><span class="token punctuation">></span></span>This is my paragraph.<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>p</span><span class="token punctuation">></span></span> + <span class="token tag"><span class="token tag"><span class="token punctuation"></</span>body</span><span class="token punctuation">></span></span> +<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>html</span><span class="token punctuation">></span></span> +</pre> +</div> <h4 id="result_2">Result</h4> +<div class="code-example" id="sect2"> + +<iframe class="sample-code-frame" title="Multiple style elements sample" id="frame_multiple_style_elements" width="100%" height="100" src="https://live.mdnplay.dev/en-US/docs/Web/HTML/Element/style/runner.html?id=multiple_style_elements" loading="lazy"></iframe> +</div> +</div> +<h3 id="including_a_media_query">Including a media query</h3> +<div class="section-content"> +<p>In this example we build on the previous one, including a <code>media</code> attribute on the second <code><style></code> element so it is only applied when the viewport is less than 500px in width.</p> <div class="code-example"> +<p class="example-header"><span class="language-name">html</span></p> +<pre data-signature="2vvFiULEGiSNCyiwFEbxjnlPzEVZXl/xwEfDs7YycdQ=" data-language="html"><span class="token doctype"><span class="token punctuation"><!</span><span class="token doctype-tag">doctype</span> <span class="token name">html</span><span class="token punctuation">></span></span> +<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>html</span> <span class="token attr-name">lang</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>en-US<span class="token punctuation">"</span></span><span class="token punctuation">></span></span> + <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>head</span><span class="token punctuation">></span></span> + <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>meta</span> <span class="token attr-name">charset</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>UTF-8<span class="token punctuation">"</span></span> <span class="token punctuation">/></span></span> + <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>title</span><span class="token punctuation">></span></span>Test page<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>title</span><span class="token punctuation">></span></span> + <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>style</span><span class="token punctuation">></span></span><span class="token style"><span class="token language-css"> + <span class="token selector">p</span> <span class="token punctuation">{</span> + <span class="token property">color</span><span class="token punctuation">:</span> white<span class="token punctuation">;</span> + <span class="token property">background-color</span><span class="token punctuation">:</span> blue<span class="token punctuation">;</span> + <span class="token property">padding</span><span class="token punctuation">:</span> 5px<span class="token punctuation">;</span> + <span class="token property">border</span><span class="token punctuation">:</span> 1px solid black<span class="token punctuation">;</span> + <span class="token punctuation">}</span> + </span></span><span class="token tag"><span class="token tag"><span class="token punctuation"></</span>style</span><span class="token punctuation">></span></span> + <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>style</span> <span class="token attr-name">media</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>all and (max-width: 500px)<span class="token punctuation">"</span></span><span class="token punctuation">></span></span><span class="token style"><span class="token language-css"> + <span class="token selector">p</span> <span class="token punctuation">{</span> + <span class="token property">color</span><span class="token punctuation">:</span> blue<span class="token punctuation">;</span> + <span class="token property">background-color</span><span class="token punctuation">:</span> yellow<span class="token punctuation">;</span> + <span class="token punctuation">}</span> + </span></span><span class="token tag"><span class="token tag"><span class="token punctuation"></</span>style</span><span class="token punctuation">></span></span> + <span class="token tag"><span class="token tag"><span class="token punctuation"></</span>head</span><span class="token punctuation">></span></span> + <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>body</span><span class="token punctuation">></span></span> + <span class="token tag"><span class="token tag"><span class="token punctuation"><</span>p</span><span class="token punctuation">></span></span>This is my paragraph.<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>p</span><span class="token punctuation">></span></span> + <span class="token tag"><span class="token tag"><span class="token punctuation"></</span>body</span><span class="token punctuation">></span></span> +<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>html</span><span class="token punctuation">></span></span> +</pre> +</div> <h4 id="result_3">Result</h4> +<div class="code-example" id="sect3"> + +<iframe class="sample-code-frame" title="Including a media query sample" id="frame_including_a_media_query" width="100%" height="100" src="https://live.mdnplay.dev/en-US/docs/Web/HTML/Element/style/runner.html?id=including_a_media_query" loading="lazy"></iframe> +</div> +</div> +<h2 id="technical_summary">Technical summary</h2> +<div class="section-content"><figure class="table-container"><div class="_table"><table class="properties"> <tbody> <tr> <th><a href="../content_categories">Content categories</a></th> <td> <a href="../content_categories#metadata_content">Metadata content</a>, and if the <code>scoped</code> attribute is present: <a href="../content_categories#flow_content">flow content</a>. </td> </tr> <tr> <th>Permitted content</th> <td> Text content matching the <code>type</code> attribute, that is <code>text/css</code>. </td> </tr> <tr> <th>Tag omission</th> <td>Neither tag is omissible.</td> </tr> <tr> <th>Permitted parents</th> <td> Any element that accepts <a href="../content_categories#metadata_content">metadata content</a>. </td> </tr> <tr> <th scope="row">Implicit ARIA role</th> <td><a href="https://www.w3.org/TR/html-aria/#dfn-no-corresponding-role" target="_blank">No corresponding role</a></td> </tr> <tr> <th scope="row">Permitted ARIA roles</th> <td>No <code>role</code> permitted</td> </tr> <tr> <th>DOM interface</th> <td><a href="https://developer.mozilla.org/en-US/docs/Web/API/HTMLStyleElement"><code>HTMLStyleElement</code></a></td> </tr> </tbody> </table></div></figure></div> +<h2 id="specifications">Specifications</h2> +<div class="_table"><table class="standard-table"> +<thead><tr><th scope="col">Specification</th></tr></thead> +<tbody><tr><td><a href="https://html.spec.whatwg.org/multipage/semantics.html#the-style-element">HTML Standard <br><small># the-style-element</small></a></td></tr></tbody> +</table></div> +<h2 id="browser_compatibility">Browser compatibility</h2> +<div class="_table"><table> +<thead> +<tr id="bct-browser-type"> +<th></th> +<th colspan="6">Desktop</th> +<th colspan="6">Mobile</th> +</tr> +<tr id="bct-browsers"> +<th></th> +<th>Chrome</th> +<th>Edge</th> +<th>Firefox</th> +<th>Internet Explorer</th> +<th>Opera</th> +<th>Safari</th> +<th>WebView Android</th> +<th>Chrome Android</th> +<th>Firefox for Android</th> +<th>Opera Android</th> +<th>Safari on IOS</th> +<th>Samsung Internet</th> +</tr> +</thead> +<tbody> +<tr> +<th><code>style</code></th> +<td class="bc-supports-yes">1</td> +<td class="bc-supports-yes">12</td> +<td class="bc-supports-yes">1</td> +<td class="bc-supports-yes">3</td> +<td class="bc-supports-yes">3.5</td> +<td class="bc-supports-yes">1</td> +<td class="bc-supports-yes">4.4</td> +<td class="bc-supports-yes">18</td> +<td class="bc-supports-yes">4</td> +<td class="bc-supports-yes">10.1</td> +<td class="bc-supports-yes">1</td> +<td class="bc-supports-yes">1.0</td> +</tr> +<tr> +<th><code>blocking</code></th> +<td class="bc-supports-yes">105</td> +<td class="bc-supports-yes">105</td> +<td class="bc-supports-no">No</td> +<td class="bc-supports-no">No</td> +<td class="bc-supports-yes">91</td> +<td class="bc-supports-no">No</td> +<td class="bc-supports-yes">105</td> +<td class="bc-supports-yes">105</td> +<td class="bc-supports-no">No</td> +<td class="bc-supports-yes">72</td> +<td class="bc-supports-no">No</td> +<td class="bc-supports-yes">20.0</td> +</tr> +<tr> +<th><code>media</code></th> +<td class="bc-supports-yes">1</td> +<td class="bc-supports-yes">12</td> +<td class="bc-supports-yes">1</td> +<td class="bc-supports-yes">3</td> +<td class="bc-supports-yes">3.5</td> +<td class="bc-supports-yes">1</td> +<td class="bc-supports-yes">4.4</td> +<td class="bc-supports-yes">18</td> +<td class="bc-supports-yes">4</td> +<td class="bc-supports-yes">10.1</td> +<td class="bc-supports-yes">1</td> +<td class="bc-supports-yes">1.0</td> +</tr> +<tr> +<th><code>title</code></th> +<td class="bc-supports-yes">1</td> +<td class="bc-supports-yes">12</td> +<td class="bc-supports-yes">1</td> +<td class="bc-supports-yes">3</td> +<td class="bc-supports-yes">3.5</td> +<td class="bc-supports-yes">1</td> +<td class="bc-supports-yes">4.4</td> +<td class="bc-supports-yes">18</td> +<td class="bc-supports-yes">4</td> +<td class="bc-supports-yes">10.1</td> +<td class="bc-supports-yes">1</td> +<td class="bc-supports-yes">1.0</td> +</tr> +<tr> +<th><code>type</code></th> +<td class="bc-supports-yes">1</td> +<td class="bc-supports-yes">12</td> +<td class="bc-supports-yes"><details><summary>1</summary>Before 75, Firefox accepted any CSS media (MIME) type, with optional parameters. Starting in 75, this has been restricted to the string 'text/css', per the spec.</details></td> +<td class="bc-supports-yes">3</td> +<td class="bc-supports-yes">3.5</td> +<td class="bc-supports-yes">1</td> +<td class="bc-supports-yes">4.4</td> +<td class="bc-supports-yes">18</td> +<td class="bc-supports-yes">4</td> +<td class="bc-supports-yes">10.1</td> +<td class="bc-supports-yes">1</td> +<td class="bc-supports-yes">1.0</td> +</tr> +</tbody> +</table></div> +<h2 id="see_also">See also</h2> +<div class="section-content"><ul> <li>The <a href="link"><code><link></code></a> element, which allows us to apply external stylesheets to a document.</li> <li><a href="https://developer.mozilla.org/en-US/docs/Web/CSS/Alternative_style_sheets">Alternative Style Sheets</a></li> </ul></div><div class="_attribution"> + <p class="_attribution-p"> + © 2005–2023 MDN contributors.<br>Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.<br> + <a href="https://developer.mozilla.org/en-US/docs/Web/HTML/Element/style" class="_attribution-link">https://developer.mozilla.org/en-US/docs/Web/HTML/Element/style</a> + </p> +</div> |