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HTML

About HTML Preprocessors

HTML preprocessors can make writing HTML more powerful or convenient. For instance, Markdown is designed to be easier to write and read for text documents and you could write a loop in Pug.

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Adding Classes

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About the <head>

In CodePen, whatever you write in the HTML editor is what goes within the <body> tags in a basic HTML5 template. If you need things in the <head> of the document, put that code here.

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Insecure Resource

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CSS

About CSS Preprocessors

CSS preprocessors help make authoring CSS easier. All of them offer things like variables and mixins to provide convenient abstractions.

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CSS Base

About CSS Base

It's a common practice to apply CSS to a page that styles elements such that they are consistent across all browsers. We offer two of the most popular choices: normalize.css and a reset. Or, choose Neither and nothing will be applied.

Vendor Prefixing

About Vendor Prefixing

To get the best cross-browser support, it is a common practice to apply vendor prefixes to CSS properties and values that require them to work. For instance -webkit- or -moz-.

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Add External Stylesheets/Pens

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JavaScript

About JavaScript Preprocessors

JavaScript preprocessors can help make authoring JavaScript easier and more convenient.

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Babel includes JSX processing.

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Packages

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HTML 

              
                <p id="section-messages" class="content-description"><strong>Messages:</strong></p>

<ul class="messages" role="list">
	<li class="messages__message">Message &mdash; <a href="#">link</a></li>
	<li class="messages__message messages__message--info">Message info &mdash; <a href="#">link</a></li>
	<li class="messages__message messages__message--success">Message success &mdash; <a href="#">link</a></li>
	<li class="messages__message messages__message--warning">Message warning &mdash; <a href="#">link</a></li>
	<li class="messages__message messages__message--danger">Message error (danger) &mdash; <a href="#">link</a></li>
</ul>

<hr>

<p id="section-headings" class="content-description"><strong>Headings:</strong></p>

<h1>Heading Level 1</h1>
<p>Morbi leo risus, porta ac consectetur ac, vestibulum at eros.</p>

<h2>Heading Level 2</h2>
<p>Morbi leo risus, porta ac consectetur ac, vestibulum at eros.</p>

<h3>Heading Level 3</h3>
<p>Morbi leo risus, porta ac consectetur ac, vestibulum at eros.</p>

<h4>Heading level 4</h4>
<p>Morbi leo risus, porta ac consectetur ac, vestibulum at eros.</p>

<h5>Heading level 5</h5>
<p>Morbi leo risus, porta ac consectetur ac, vestibulum at eros.</p>

<h6>Heading level 6</h6>
<p>Morbi leo risus, porta ac consectetur ac, vestibulum at eros.</p>

<hr>

<p id="section-text" class="content-description"><strong>Text:</strong></p>

<p>Pellentesque habitant morbi tristique senectus et netus et malesuada fames
	ac turpis egestas.</p>

<p><strong>Pellentesque habitant morbi tristique</strong> senectus et netus et
	malesuada fames ac turpis egestas. Vestibulum tortor quam, feugiat vitae,
	ultricies eget, tempor sit amet, ante. Donec eu libero sit amet quam egestas
	semper. <em>Aenean ultricies mi vitae est.</em> Mauris placerat eleifend leo.
	Quisque sit amet est et sapien ullamcorper pharetra. Vestibulum erat wisi,
	condimentum sed, <code>commodo vitae</code>, ornare sit amet, wisi. Aenean
	fermentum, elit eget tincidunt condimentum, eros ipsum rutrum orci, sagittis
	tempus lacus enim ac dui. <a href="#">Donec non enim</a> in turpis pulvinar
	facilisis. Ut felis.</p>

<blockquote>
	<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Vivamus magna.
		Cras in mi at felis aliquet congue. Ut a est eget ligula molestie gravida.
		Curabitur massa. Donec eleifend, libero at sagittis mollis, tellus est
		malesuada tellus, at luctus turpis elit sit amet quam. Vivamus pretium
		ornare est.</p>
	<cite>#cite <a href="#cite">#cite</a></cite>
</blockquote>

<p>Pellentesque habitant morbi tristique senectus et netus et malesuada fames
	ac turpis egestas. Vestibulum tortor quam, feugiat vitae, ultricies eget,
	tempor sit amet, ante. Donec eu libero sit amet quam egestas semper. Aenean
	ultricies mi vitae est. Mauris placerat eleifend leo.</p>

<p>Vivamus sagittis lacus vel augue laoreet rutrum faucibus dolor auctor.
	Curabitur blandit tempus porttitor. Curabitur blandit tempus porttitor. Etiam
	porta sem malesuada magna mollis euismod. Vestibulum id ligula porta felis
	euismod semper.</p>

<hr>

<p id="section-lists" class="content-description"><strong>Lists:</strong></p>

<p id="ordered-list" class="content-description"><strong>Ordered list:</strong></p>
<ol aria-labelledby="ordered-list">
	<li>Lorem ipsum dolor sit amet, consectetuer adipiscing elit.</li>
	<li>Aliquam tincidunt mauris eu risus.</li>
	<li>Maecenas sed diam eget risus varius blandit sit amet non magna.</li>
</ol>

<p id="ordered-list-reversed" class="content-description"><strong>Ordered list (reversed):</strong></p>
<ol aria-labelledby="ordered-list-reversed" reversed>
	<li>Lorem ipsum dolor sit amet, consectetuer adipiscing elit.</li>
	<li>Aliquam tincidunt mauris eu risus.</li>
	<li>Maecenas sed diam eget risus varius blandit sit amet non magna.</li>
</ol>

<p id="unordered-list" class="content-description"><strong>Unordered list:</strong></p>
<ul aria-labelledby="unordered-list">
	<li>Lorem ipsum dolor sit amet, consectetuer adipiscing elit.</li>
	<li>Aliquam tincidunt mauris eu risus.</li>
	<li>Maecenas sed diam eget risus varius blandit sit amet non magna.</li>
</ul>

<p id="definition-list" class="content-description"><strong>Definition list:</strong></p>
<dl aria-labelledby="definition-list">
	<dt>Lorem ipsum dolor sit amet</dt>
	<dd>Consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore
		et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation
		ullamco laboris nisi ut aliquip ex ea commodo consequat.</dd>

	<dt>Lorem ipsum dolor sit amet</dt>
	<dd>Consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore
		et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation
		ullamco laboris nisi ut aliquip ex ea commodo consequat.</dd>
</dl>

<hr>

<p id="section-inline-elements" class="content-description"><strong>Inline elements:</strong></p>

<p><a href="#">Link</a></p>
<p><strong>Strong</strong></p>
<p><em>Emphasized</em></p>
<p><small>Small</small></p>
<p><del>Deleted</del></p>
<p><ins>Inserted</i></p>
<p><kbd>Keyboard</kbd> (<kbd>ctrl</kbd> + <kbd>alt</kbd> + <kbd>delete</kbd>)</p>
<p><mark>Marked</mark></p>
<p><abbr title="Abbreviation">Abbreviation</abbr></p>
<p>Sub<sub>script</sub></p>
<p>Super<sup>script</sup></p>

<hr>

<p id="section-tables" class="content-description"><strong>Tables:</strong></p>

<table>
	<caption>Caption</caption>
	<thead>
		<tr>
			<th scope="col">Pellentesque</th>
			<th scope="col">Quam</th>
			<th scope="col">Aenean</th>
		</tr>
	</thead>
	<tbody>
		<tr>
			<th scope="row">Fermentum</th>
			<td>Fringilla</td>
			<td>Dapibus</td>
		</tr>
		<tr>
			<th scope="row">Lorem</th>
			<td>Mollis</td>
			<td>Inceptos</td>
		</tr>
		<tr>
			<th scope="row">Sollicitudin</th>
			<td>Ullamcorper</td>
			<td>Tellus</td>
		</tr>
	</tbody>
	<tfoot>
		<tr>
			<th scope="row">Ridiculus</th>
			<td colspan="2">Venenatis</td>
		</tr>
	</tfoot>
</table>

<hr>

<p id="section-fieldsets" class="content-description"><strong>Fieldsets:</strong></p>

<fieldset>
	<legend>Legend</legend>

	<p>Fieldset</p>
</fieldset>

<hr>

<p id="section-form-elements" class="content-description"><strong>Form elements:</strong></p>

<div class="form__field form__field--text">
	<label for="kitchen-sink-text">Text</label>
	<input id="kitchen-sink-text" type="text" placeholder="Lorem ipsum dolor sit amet">
</div>

<div class="form__field form__field--text">
	<label for="kitchen-sink-text-2">Text disabled</label>
	<input id="kitchen-sink-text-2" type="text" placeholder="Lorem ipsum dolor sit amet" disabled>
</div>

<div class="form__field form__field--checkbox">
	<input id="kitchen-sink-checkbox" name="checkbox" type="checkbox">
	<label for="kitchen-sink-checkbox">Checkbox</label>
</div>

<div class="form__field form__field--checkbox">
	<input id="kitchen-sink-checkbox-2" name="checkbox" type="checkbox" checked>
	<label for="kitchen-sink-checkbox-2">Checkbox</label>
</div>

<div class="form__field form__field--radio">
	<input id="kitchen-sink-radio" name="radio" type="radio">
	<label for="kitchen-sink-radio">Radio</label>
</div>

<div class="form__field form__field--radio">
	<input id="kitchen-sink-radio-2" name="radio" type="radio" checked>
	<label for="kitchen-sink-radio-2">Radio</label>
</div>

<div class="form__field form__field--select">
	<label for="kitchen-sink-select">Select</label>
	<select id="kitchen-sink-select">
		<option>-</option>
		<option selected>Pellentesque</option>
		<option>Quam</option>
		<option>Aenean</option>
	</select>
</div>

<div class="form__field form__field--select">
	<label for="kitchen-sink-select-2">Select w/ optgroup</label>
	<select id="kitchen-sink-select-2">
		<option>-</option>
		<optgroup label="Ridiculus">
			<option selected>Fermentum</option>
			<option>Fringilla</option>
			<option>Dapibus</option>
		</optgroup>
		<optgroup label="Venenatis">
			<option>Lorem</option>
			<option>Mollis</option>
			<option>Inceptos</option>
		</optgroup>
	</select>
</div>

<div class="form__field form__field--file">
	<label for="kitchen-sink-file">File</label>
	<input id="kitchen-sink-file" type="file">
</div>

<hr>

<p id="section-buttons" class="content-description"><strong>Buttons:</strong></p>

<div>
	<button type="button">Lorem ipsum</button>
	<span>button</span>
</div>

<div>
	<button type="submit">Lorem ipsum</button>
	<span>submit</span>
</div>

<div>
	<button type="reset">Lorem ipsum</button>
	<span>reset</span>
</div>

<div>
	<button type="button" disabled>Lorem ipsum</button>
	<span>button, disabled</span>
</div>

<hr>

<p id="section-code-blocks" class="content-description"><strong>Code blocks:</strong></p>

<pre class="lang-python"><code><!--
def hello_world():
	print("Hello world")
</code></pre>

<pre class="lang-sql"><code><!--
-->SELECT *
FROM `hello_world`
WHERE `foo` = 'bar';
</code></pre>

<pre class="lang-html"><code><!--
-->&lt;h1&gt;Hello world&lt;/h1&gt;
&lt;p&gt;Vestibulum id ligula porta felis euismod semper.&lt;/p&gt;
</code></pre>

<pre class="lang-css"><code><!--
-->.hello-world {
	background-color: #663399;
	block-size: 10vh;
	display: block;
	inline-size: 4em;
}
</code></pre>

<hr>

<p><small>Source: <a href="https://codepen.io/MHLut/pen/JNKzPX" rel="external">https://codepen.io/MHLut/pen/JNKzPX</a></small></p>
!

CSS 

              
                // Use CSS and apply them to a variety of basic HTML elements.
// Tip: Add a Kitchen sink page to your own project and add your own commonly-used elements for improved use.
// Example: http://tools.marijkeluttekes.nl/kitchen-sink
!

JS
!
999px

Console