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HTML

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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

In CodePen, whatever you write in the HTML editor is what goes within the <body> tags in a basic HTML5 template. So you don't have access to higher-up elements like the <html> tag. If you want to add classes there that can affect the whole document, this is the place to do it.

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

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JavaScript

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

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Babel includes JSX processing.

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HTML 

              
                <label class="toggle happy-sad">
    <input type="checkbox" class="toggle-checkbox">
    <div class="toggle-btn"></div>
</label>

<label class="toggle love-hate">
    <input type="checkbox" class="toggle-checkbox">
    <div class="toggle-btn"></div>
</label>

<label class="toggle nerd-cool">
    <input type="checkbox" class="toggle-checkbox">
    <div class="toggle-btn"></div>
</label>

<label class="toggle young-old">
    <input type="checkbox" class="toggle-checkbox">
    <div class="toggle-btn"></div>
</label>

<label class="toggle male-female">
    <input type="checkbox" class="toggle-checkbox">
    <div class="toggle-btn"></div>
</label>

<label class="toggle king-queen">
    <input type="checkbox" class="toggle-checkbox">
    <div class="toggle-btn"></div>
</label>

<label class="toggle sun-moon">
    <input type="checkbox" class="toggle-checkbox">
    <div class="toggle-btn"></div>
</label>

<label class="toggle fire-water">
    <input type="checkbox" class="toggle-checkbox">
    <div class="toggle-btn"></div>
</label>

<label class="toggle heart-break">
    <input type="checkbox" class="toggle-checkbox">
    <div class="toggle-btn"></div>
</label>

<label class="toggle bomb-explode">
    <input type="checkbox" class="toggle-checkbox">
    <div class="toggle-btn"></div>
</label>

<label class="toggle egg-shell-fry">
    <input type="checkbox" class="toggle-checkbox">
    <div class="toggle-btn"></div>
</label>

<label class="toggle takeoff-land">
    <input type="checkbox" class="toggle-checkbox">
    <div class="toggle-btn"></div>
</label>

<label class="toggle hourglass-start-end">
    <input type="checkbox" class="toggle-checkbox">
    <div class="toggle-btn"></div>
</label>

<label class="toggle speaker-low-high">
    <input type="checkbox" class="toggle-checkbox">
    <div class="toggle-btn"></div>
</label>

<label class="toggle lock-unlock">
    <input type="checkbox" class="toggle-checkbox">
    <div class="toggle-btn"></div>
</label>

<label class="toggle chick-chicken">
    <input type="checkbox" class="toggle-checkbox">
    <div class="toggle-btn"></div>
</label>

<label class="toggle cow-milk">
    <input type="checkbox" class="toggle-checkbox">
    <div class="toggle-btn"></div>
</label>

<label class="toggle pig-bacon">
    <input type="checkbox" class="toggle-checkbox">
    <div class="toggle-btn"></div>
</label>

<label class="toggle fish-sushi">
    <input type="checkbox" class="toggle-checkbox">
    <div class="toggle-btn"></div>
</label>

<label class="toggle caterpillar-butterfly">
    <input type="checkbox" class="toggle-checkbox">
    <div class="toggle-btn"></div>
</label>

<label class="toggle seedling-flower">
    <input type="checkbox" class="toggle-checkbox">
    <div class="toggle-btn"></div>
</label>

<label class="toggle thumbs-up-down">
    <input type="checkbox" class="toggle-checkbox">
    <div class="toggle-btn"></div>
</label>

<label class="toggle left-right">
    <input type="checkbox" class="toggle-checkbox">
    <div class="toggle-btn"></div>
</label>

<label class="toggle up-down">
    <input type="checkbox" class="toggle-checkbox">
    <div class="toggle-btn"></div>
</label>
!

CSS 

              
                :root {
   font-size: calc(5em + 20vw);
}

* {
    box-sizing: border-box;
}

body {
    display: flex;
    justify-content: center;
	align-content: center;
    align-items: center;
	flex-wrap: wrap;
    min-height: 100vh;
	overflow-x: hidden;
    background-color: #13fccd;
}

.toggle {
    position: relative;
    width: 1em;
    height: 0.1em;
    border-radius: 0.5em;
    border: 0.015em solid #9f9f9f;
    background-image: linear-gradient(#f2f2f2, #fff, #f2f2f2);
	margin: 0.26em 0.15em;
    cursor: pointer;
	filter: drop-shadow(0.015em 0.015em 0.01em rgba(0, 0, 0, 0.3))
}

.toggle-btn::after {
    position: absolute;
    top: -0.14rem;
	left: 0;
    width: 50%;
    font-size: 0.35em;
    text-align: center;
    transition: all 500ms cubic-bezier(0.34, 0.78, 0.55, 1.4);
}

.toggle-checkbox {
    position: absolute;
    visibility: hidden;
}

.toggle-checkbox:checked + .toggle-btn::after {
	left: 50%;
}

/* Happy/Sad Toggle */

.happy-sad .toggle-btn::after {
    content: 'šŸ˜';
}

.happy-sad .toggle-checkbox:checked + .toggle-btn::after {
    content: 'šŸ˜­';
}

/* Love/Hate Toggle */

.love-hate .toggle-btn::after {
    content: 'šŸ˜';
}

.love-hate .toggle-checkbox:checked + .toggle-btn::after {
    content: 'šŸ˜”';
}

/* Nerd/Cool Toggle */

.nerd-cool .toggle-btn::after {
    content: 'šŸ¤“';
}

.nerd-cool .toggle-checkbox:checked + .toggle-btn::after {
    content: 'šŸ˜Ž';
}

/* Young/Old Toggle */

.young-old .toggle-btn::after {
    content: 'šŸ‘¶';
}

.young-old .toggle-checkbox:checked + .toggle-btn::after {
    content: 'šŸ‘“';
}

/* Male/Female Toggle */

.male-female .toggle-btn::after {
    content: 'šŸ‘Ø';
}

.male-female .toggle-checkbox:checked + .toggle-btn::after {
    content: 'šŸ‘©';
}

/* King/Queen Toggle */

.king-queen .toggle-btn::after {
    content: 'šŸ¤“';
}

.king-queen .toggle-checkbox:checked + .toggle-btn::after {
    content: 'šŸ‘ø';
}

/* Sun/Moon Toggle */

.sun-moon .toggle-btn::after {
    content: 'šŸŒž';
}

.sun-moon .toggle-checkbox:checked + .toggle-btn::after {
    content: 'šŸŒš';
}

/* Fire/Water Toggle */

.fire-water .toggle-btn::after {
    content: 'šŸ”„';
}

.fire-water .toggle-checkbox:checked + .toggle-btn::after {
    content: 'šŸ’§';
}

/* Heart/Break Toggle */

.heart-break .toggle-btn::after {
    content: 'šŸ’˜';
}

.heart-break .toggle-checkbox:checked + .toggle-btn::after {
    content: 'šŸ’”';
}

/* Bomb/Explode Toggle */

.bomb-explode .toggle-btn::after {
    content: 'šŸ’£';
}

.bomb-explode .toggle-checkbox:checked + .toggle-btn::after {
    content: 'šŸ’„';
}

/* Egg Shell/Fry Toggle */

.egg-shell-fry .toggle-btn::after {
    content: 'šŸ„š';
}

.egg-shell-fry .toggle-checkbox:checked + .toggle-btn::after {
    content: 'šŸ³';
}

/* Takeoff/Land Toggle */

.takeoff-land .toggle-btn::after {
    content: 'šŸ›«';
}

.takeoff-land .toggle-checkbox:checked + .toggle-btn::after {
    content: 'šŸ›¬';
}

/* Hourglass Start/End Toggle */

.hourglass-start-end .toggle-btn::after {
    content: 'ā³';
}

.hourglass-start-end .toggle-checkbox:checked + .toggle-btn::after {
    content: 'āŒ›';
}

/* Speaker Low/High Toggle */

.speaker-low-high .toggle-btn::after {
    content: 'šŸ”‰';
}

.speaker-low-high .toggle-checkbox:checked + .toggle-btn::after {
    content: 'šŸ”Š';
}

/* Lock/Unlock Toggle */

.lock-unlock .toggle-btn::after {
    content: 'šŸ”’';
}

.lock-unlock .toggle-checkbox:checked + .toggle-btn::after {
    content: 'šŸ”“';
}

/* Chick/Chicken Toggle */

.chick-chicken .toggle-btn::after {
    content: 'šŸ£';
}

.chick-chicken .toggle-checkbox:checked + .toggle-btn::after {
    content: 'šŸ“';
}

/* Cow/Milk Toggle */

.cow-milk .toggle-btn::after {
    content: 'šŸ„';
}

.cow-milk .toggle-checkbox:checked + .toggle-btn::after {
    content: 'šŸ„›';
}

/* Pig/Bacon Toggle */

.pig-bacon .toggle-btn::after {
    content: 'šŸ–';
}

.pig-bacon .toggle-checkbox:checked + .toggle-btn::after {
    content: 'šŸ„“';
}

/* Fish/Sushi Toggle */

.fish-sushi .toggle-btn::after {
    content: 'šŸŸ';
}

.fish-sushi .toggle-checkbox:checked + .toggle-btn::after {
    content: 'šŸ£';
}

/* Caterpillar/Butterfly Toggle */

.caterpillar-butterfly .toggle-btn::after {
    content: 'šŸ›';
}

.caterpillar-butterfly .toggle-checkbox:checked + .toggle-btn::after {
    content: 'šŸ¦‹';
}

/* Seedling/Flower Toggle */

.seedling-flower .toggle-btn::after {
    content: 'šŸŒ±';
}

.seedling-flower .toggle-checkbox:checked + .toggle-btn::after {
    content: 'šŸŒ·';
}

/* Thumbs Up/Down Toggle */

.thumbs-up-down .toggle-btn::after {
    content: 'šŸ‘';
}

.thumbs-up-down .toggle-checkbox:checked + .toggle-btn::after {
    content: 'šŸ‘Ž';
}

/* Left/Right Toggle */

.left-right .toggle-btn::after {
    content: 'šŸ‘ˆ';
}

.left-right .toggle-checkbox:checked + .toggle-btn::after {
    content: 'šŸ‘‰';
}

/* Up/Down Toggle */

.up-down .toggle-btn::after {
    content: 'šŸ‘†';
}

.up-down .toggle-checkbox:checked + .toggle-btn::after {
    content: 'šŸ‘‡';
}
!

JS 

              
                /*

ā£ā€‚ā€‚šŸ‘‘
ā€‚ā€‚šŸ˜Ž
āœŒšŸ‘•ā£āœŒ
ā€‚ā€‚šŸ‘–
 šŸ‘ŸšŸ‘Ÿ  
 
*/
!
999px

Console