html [html-testpage]这是一个填充了常用HTML元素的测试页面，用于在构建CSS系统和fr时提供视觉反馈
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<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>HTML5 Test Page</title>
</head>
<body>
<div id="top" class="page" role="document">
<header role="banner">
<h1>HTML5 Test Page</h1>
<p>This is a test page filled with common HTML elements to be used to provide visual feedback whilst building CSS systems and frameworks.</p>
</header>
<nav role="navigation">
<ul>
<li>
<a href="#text">Text</a>
<ul>
<li><a href="#text__headings">Headings</a></li>
<li><a href="#text__paragraphs">Paragraphs</a></li>
<li><a href="#text__blockquotes">Blockquotes</a></li>
<li><a href="#text__lists">Lists</a></li>
<li><a href="#text__hr">Horizontal rules</a></li>
<li><a href="#text__tables">Tabular data</a></li>
<li><a href="#text__code">Code</a></li>
<li><a href="#text__inline">Inline elements</a></li>
<li><a href="#text__comments">HTML Comments</a></li>
</ul>
</li>
<li>
<a href="#embedded">Embedded content</a>
<ul>
<li><a href="#embedded__images">Images</a></li>
<li><a href="#embedded__audio">Audio</a></li>
<li><a href="#embedded__video">Video</a></li>
<li><a href="#embedded__canvas">Canvas</a></li>
<li><a href="#embedded__meter">Meter</a></li>
<li><a href="#embedded__progress">Progress</a></li>
<li><a href="#embedded__svg">Inline SVG</a></li>
<li><a href="#embedded__iframe">IFrames</a></li>
</ul>
</li>
<li>
<a href="#forms">Form elements</a>
<ul>
<li><a href="#forms__input">Input fields</a></li>
<li><a href="#forms__select">Select menus</a></li>
<li><a href="#forms__checkbox">Checkboxes</a></li>
<li><a href="#forms__radio">Radio buttons</a></li>
<li><a href="#forms__textareas">Textareas</a></li>
<li><a href="#forms__html5">HTML5 inputs</a></li>
<li><a href="#forms__action">Action buttons</a></li>
</ul>
</li>
</ul>
</nav>
<main role="main">
<section id="text">
<header><h1>Text</h1></header>
<article id="text__headings">
<header>
<h1>Headings</h1>
</header>
<div>
<h1>Heading 1</h1>
<h2>Heading 2</h2>
<h3>Heading 3</h3>
<h4>Heading 4</h4>
<h5>Heading 5</h5>
<h6>Heading 6</h6>
</div>
<footer><p><a href="#top">[Top]</a></p></footer>
</article>
<article id="text__paragraphs">
<header><h1>Paragraphs</h1></header>
<div>
<p>A paragraph (from the Greek paragraphos, “to write beside” or “written beside”) is a self-contained unit of a discourse in writing dealing with a particular point or idea. A paragraph consists of one or more sentences. Though not required by the syntax of any language, paragraphs are usually an expected part of formal writing, used to organize longer prose.</p>
</div>
<footer><p><a href="#top">[Top]</a></p></footer>
</article>
<article id="text__blockquotes">
<header><h1>Blockquotes</h1></header>
<div>
<blockquote>
<p>A block quotation (also known as a long quotation or extract) is a quotation in a written document, that is set off from the main text as a paragraph, or block of text.</p>
<p>It is typically distinguished visually using indentation and a different typeface or smaller size quotation. It may or may not include a citation, usually placed at the bottom.</p>
<cite><a href="#!">Said no one, ever.</a></cite>
</blockquote>
</div>
<footer><p><a href="#top">[Top]</a></p></footer>
</article>
<article id="text__lists">
<header><h1>Lists</h1></header>
<div>
<h3>Definition list</h3>
<dl>
<dt>Definition List Title</dt>
<dd>This is a definition list division.</dd>
</dl>
<h3>Ordered List</h3>
<ol>
<li>List Item 1</li>
<li>List Item 2</li>
<li>List Item 3</li>
</ol>
<h3>Unordered List</h3>
<ul>
<li>List Item 1</li>
<li>List Item 2</li>
<li>List Item 3</li>
</ul>
</div>
<footer><p><a href="#top">[Top]</a></p></footer>
</article>
<article id="text__hr">
<header><h1>Horizontal rules</h1></header>
<div>
<hr>
</div>
<footer><p><a href="#top">[Top]</a></p></footer>
</article>
<article id="text__tables">
<header><h1>Tabular data</h1></header>
<table>
<caption>Table Caption</caption>
<thead>
<tr>
<th>Table Heading 1</th>
<th>Table Heading 2</th>
<th>Table Heading 3</th>
<th>Table Heading 4</th>
<th>Table Heading 5</th>
</tr>
</thead>
<tfoot>
<tr>
<th>Table Footer 1</th>
<th>Table Footer 2</th>
<th>Table Footer 3</th>
<th>Table Footer 4</th>
<th>Table Footer 5</th>
</tr>
</tfoot>
<tbody>
<tr>
<td>Table Cell 1</td>
<td>Table Cell 2</td>
<td>Table Cell 3</td>
<td>Table Cell 4</td>
<td>Table Cell 5</td>
</tr>
<tr>
<td>Table Cell 1</td>
<td>Table Cell 2</td>
<td>Table Cell 3</td>
<td>Table Cell 4</td>
<td>Table Cell 5</td>
</tr>
<tr>
<td>Table Cell 1</td>
<td>Table Cell 2</td>
<td>Table Cell 3</td>
<td>Table Cell 4</td>
<td>Table Cell 5</td>
</tr>
<tr>
<td>Table Cell 1</td>
<td>Table Cell 2</td>
<td>Table Cell 3</td>
<td>Table Cell 4</td>
<td>Table Cell 5</td>
</tr>
</tbody>
</table>
<footer><p><a href="#top">[Top]</a></p></footer>
</article>
<article id="text__code">
<header><h1>Code</h1></header>
<div>
<p><strong>Keyboard input:</strong> <kbd>Cmd</kbd></p>
<p><strong>Inline code:</strong> <code><div>code</div></code></p>
<p><strong>Sample output:</strong> <samp>This is sample output from a computer program.</samp></p>
<h2>Pre-formatted text</h2>
<pre>P R E F O R M A T T E D T E X T
! " # $ % & ' ( ) * + , - . /
0 1 2 3 4 5 6 7 8 9 : ; < = > ?
@ A B C D E F G H I J K L M N O
P Q R S T U V W X Y Z [ \ ] ^ _
` a b c d e f g h i j k l m n o
p q r s t u v w x y z { | } ~ </pre>
</div>
<footer><p><a href="#top">[Top]</a></p></footer>
</article>
<article id="text__inline">
<header><h1>Inline elements</h1></header>
<div>
<p><a href="#!">This is a text link</a>.</p>
<p><strong>Strong is used to indicate strong importance.</strong></p>
<p><em>This text has added emphasis.</em></p>
<p>The <b>b element</b> is stylistically different text from normal text, without any special importance.</p>
<p>The <i>i element</i> is text that is offset from the normal text.</p>
<p>The <u>u element</u> is text with an unarticulated, though explicitly rendered, non-textual annotation.</p>
<p><del>This text is deleted</del> and <ins>This text is inserted</ins>.</p>
<p><s>This text has a strikethrough</s>.</p>
<p>Superscript<sup>®</sup>.</p>
<p>Subscript for things like H<sub>2</sub>O.</p>
<p><small>This small text is small for for fine print, etc.</small></p>
<p>Abbreviation: <abbr title="HyperText Markup Language">HTML</abbr></p>
<p><q cite="https://developer.mozilla.org/en-US/docs/HTML/Element/q">This text is a short inline quotation.</q></p>
<p><cite>This is a citation.</cite></p>
<p>The <dfn>dfn element</dfn> indicates a definition.</p>
<p>The <mark>mark element</mark> indicates a highlight.</p>
<p>The <var>variable element</var>, such as <var>x</var> = <var>y</var>.</p>
<p>The time element: <time datetime="2013-04-06T12:32+00:00">2 weeks ago</time></p>
</div>
<footer><p><a href="#top">[Top]</a></p></footer>
</article>
<article id="text__comments">
<header><h1>HTML Comments</h1></header>
<div>
<p>There is comment here: <!--This comment should not be displayed--></p>
<p>There is a comment spanning multiple tags and lines below here.</p>
<!--<p><a href="#!">This is a text link. But it should not be displayed in a comment</a>.</p>
<p><strong>Strong is used to indicate strong importance. But, it should not be displayed in a comment</strong></p>
<p><em>This text has added emphasis. But, it should not be displayed in a comment</em></p>-->
</div>
<footer><p><a href="#top">[Top]</a></p></footer>
</article>
</section>
<section id="embedded">
<header><h1>Embedded content</h1></header>
<article id="embedded__images">
<header><h2>Images</h2></header>
<div>
<h3>No <code><figure></code> element</h3>
<p><img src="http://placekitten.com/480/480" alt="Image alt text"></p>
<h3>Wrapped in a <code><figure></code> element, no <code><figcaption></code></h3>
<figure><img src="http://placekitten.com/420/420" alt="Image alt text"></figure>
<h3>Wrapped in a <code><figure></code> element, with a <code><figcaption></code></h3>
<figure>
<img src="http://placekitten.com/420/420" alt="Image alt text">
<figcaption>Here is a caption for this image.</figcaption>
</figure>
</div>
<footer><p><a href="#top">[Top]</a></p></footer>
</article>
<article id="embedded__audio">
<header><h2>Audio</h2></header>
<div><audio controls="">audio</audio></div>
<footer><p><a href="#top">[Top]</a></p></footer>
</article>
<article id="embedded__video">
<header><h2>Video</h2></header>
<div><video controls="">video</video></div>
<footer><p><a href="#top">[Top]</a></p></footer>
</article>
<article id="embedded__canvas">
<header><h2>Canvas</h2></header>
<div><canvas>canvas</canvas></div>
<footer><p><a href="#top">[Top]</a></p></footer>
</article>
<article id="embedded__meter">
<header><h2>Meter</h2></header>
<div><meter value="2" min="0" max="10">2 out of 10</meter></div>
<footer><p><a href="#top">[Top]</a></p></footer>
</article>
<article id="embedded__progress">
<header><h2>Progress</h2></header>
<div><progress>progress</progress></div>
<footer><p><a href="#top">[Top]</a></p></footer>
</article>
<article id="embedded__svg">
<header><h2>Inline SVG</h2></header>
<div><svg width="100px" height="100px"><circle cx="100" cy="100" r="100" fill="#1fa3ec"></circle></svg></div>
<footer><p><a href="#top">[Top]</a></p></footer>
</article>
<article id="embedded__iframe">
<header><h2>IFrame</h2></header>
<div><iframe src="index.html" height="300"></iframe></div>
<footer><p><a href="#top">[Top]</a></p></footer>
</article>
</section>
<section id="forms">
<header><h1>Form elements</h1></header>
<form>
<fieldset id="forms__input">
<legend>Input fields</legend>
<p>
<label for="input__text">Text Input</label>
<input id="input__text" type="text" placeholder="Text Input">
</p>
<p>
<label for="input__password">Password</label>
<input id="input__password" type="password" placeholder="Type your Password">
</p>
<p>
<label for="input__webaddress">Web Address</label>
<input id="input__webaddress" type="url" placeholder="http://yoursite.com">
</p>
<p>
<label for="input__emailaddress">Email Address</label>
<input id="input__emailaddress" type="email" placeholder="name@email.com">
</p>
<p>
<label for="input__phone">Phone Number</label>
<input id="input__phone" type="tel" placeholder="(999) 999-9999">
</p>
<p>
<label for="input__search">Search</label>
<input id="input__search" type="search" placeholder="Enter Search Term">
</p>
<p>
<label for="input__text2">Number Input</label>
<input id="input__text2" type="number" placeholder="Enter a Number">
</p>
<p>
<label for="input__text3" class="error">Error</label>
<input id="input__text3" class="is-error" type="text" placeholder="Text Input">
</p>
<p>
<label for="input__text4" class="valid">Valid</label>
<input id="input__text4" class="is-valid" type="text" placeholder="Text Input">
</p>
</fieldset>
<p><a href="#top">[Top]</a></p>
<fieldset id="forms__select">
<legend>Select menus</legend>
<p>
<label for="select">Select</label>
<select id="select">
<optgroup label="Option Group">
<option>Option One</option>
<option>Option Two</option>
<option>Option Three</option>
</optgroup>
</select>
</p>
</fieldset>
<p><a href="#top">[Top]</a></p>
<fieldset id="forms__checkbox">
<legend>Checkboxes</legend>
<ul class="list list--bare">
<li><label for="checkbox1"><input id="checkbox1" name="checkbox" type="checkbox" checked="checked"> Choice A</label></li>
<li><label for="checkbox2"><input id="checkbox2" name="checkbox" type="checkbox"> Choice B</label></li>
<li><label for="checkbox3"><input id="checkbox3" name="checkbox" type="checkbox"> Choice C</label></li>
</ul>
</fieldset>
<p><a href="#top">[Top]</a></p>
<fieldset id="forms__radio">
<legend>Radio buttons</legend>
<ul class="list list--bare">
<li><label for="radio1"><input id="radio1" name="radio" type="radio" class="radio" checked="checked"> Option 1</label></li>
<li><label for="radio2"><input id="radio2" name="radio" type="radio" class="radio"> Option 2</label></li>
<li><label for="radio3"><input id="radio3" name="radio" type="radio" class="radio"> Option 3</label></li>
</ul>
</fieldset>
<p><a href="#top">[Top]</a></p>
<fieldset id="forms__textareas">
<legend>Textareas</legend>
<p>
<label for="textarea">Textarea</label>
<textarea id="textarea" rows="8" cols="48" placeholder="Enter your message here"></textarea>
</p>
</fieldset>
<p><a href="#top">[Top]</a></p>
<fieldset id="forms__html5">
<legend>HTML5 inputs</legend>
<p>
<label for="ic">Color input</label>
<input type="color" id="ic" value="#000000">
</p>
<p>
<label for="in">Number input</label>
<input type="number" id="in" min="0" max="10" value="5">
</p>
<p>
<label for="ir">Range input</label>
<input type="range" id="ir" value="10">
</p>
<p>
<label for="idd">Date input</label>
<input type="date" id="idd" value="1970-01-01">
</p>
<p>
<label for="idm">Month input</label>
<input type="month" id="idm" value="1970-01">
</p>
<p>
<label for="idw">Week input</label>
<input type="week" id="idw" value="1970-W01">
</p>
<p>
<label for="idt">Datetime input</label>
<input type="datetime" id="idt" value="1970-01-01T00:00:00Z">
</p>
<p>
<label for="idtl">Datetime-local input</label>
<input type="datetime-local" id="idtl" value="1970-01-01T00:00">
</p>
</fieldset>
<p><a href="#top">[Top]</a></p>
<fieldset id="forms__action">
<legend>Action buttons</legend>
<p>
<input type="submit" value="<input type=submit>">
<input type="button" value="<input type=button>">
<input type="reset" value="<input type=reset>">
<input type="submit" value="<input disabled>" disabled>
</p>
<p>
<button type="submit"><button type=submit></button>
<button type="button"><button type=button></button>
<button type="reset"><button type=reset></button>
<button type="button" disabled><button disabled></button>
</p>
</fieldset>
<p><a href="#top">[Top]</a></p>
</form>
</section>
</main>
<footer role="contentinfo">
<p>Made by <a href="http://twitter.com/cbracco">@cbracco</a>. Code on <a href="http://github.com/cbracco/html5-test-page">GitHub</a>.</p>
</footer>
</div>
</body>
</html>以上是关于html [html-testpage]这是一个填充了常用HTML元素的测试页面，用于在构建CSS系统和fr时提供视觉反馈的主要内容，如果未能解决你的问题，请参考以下文章
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