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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

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About the <head>

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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

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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 

              
                <div id="wrapper">
<p>
  <span class="shape circle"></span>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin hendrerit elementum fringilla. Mauris laoreet risus enim, a tincidunt eros pulvinar ultrices. Maecenas sagittis nulla congue sem aliquet, a placerat est consequat. Morbi porttitor ante at tellus facilisis, eget commodo turpis porta. In non ipsum ex. Aenean in neque id lectus lacinia scelerisque sit amet id lectus. Ut gravida sem sit amet nunc suscipit, in scelerisque quam gravida. Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin hendrerit elementum fringilla. Mauris laoreet risus enim, a tincidunt eros pulvinar ultrices. Maecenas sagittis nulla congue sem aliquet, a placerat est consequat. Morbi porttitor ante at tellus facilisis, eget commodo turpis porta. In non ipsum ex. Aenean in neque id lectus lacinia scelerisque sit amet id lectus. Ut gravida sem sit amet nunc suscipit, in scelerisque quam gravida.
</p>
<p><span class="shape ellipse"></span>
Duis quis tellus lacus. Nam ut mollis est. Mauris ornare eget nibh quis sagittis. Sed ut tor tor mo le st ie, auc tor leo et, mat tis ex. Cu rab itur el ei fe nd eg est as ex, a eff ici tur or ci auc tor ac. Int eg er iac ul is ve sti bu lum do lor auc tor mal esu ada. Cu ra bitur pos uere nibh vel euismod luctus. Vivamus nec augue dui. Duis consequat nisi quis od io accumsan mollis. Proin congue vitae nibh non eleifend. Donec sit amet feugiat dui. Aliquam euismod, risus quis semper consequat, nulla mauris tincidunt nibh, ac varius dolor ligula gravida dui. Vestibulum molestie molestie metus at porta. Nullam id neque lacus. Morbi interdum ante in lorem varius, nec ultricies augue tempor. Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin hendrerit elementum fringilla. Mauris laoreet risus enim, a tincidunt eros pulvinar ultrices. Maecenas sagittis nulla congue sem aliquet, a placerat est consequat. Morbi porttitor ante at tellus facilisis, eget commodo turpis porta. In non ipsum ex. Aenean in neque id lectus lacinia scelerisque sit amet id lectus. Ut gravida sem sit amet nunc suscipit, in scelerisque quam gravida.
</p>
  
 <p><span class="shape rectangle"></span>
Proin in magna nibh. Sed sed varius justo. Etiam eu porta nunc, eget porttitor ante. Praesent nec tempus lectus. Curabitur molestie, purus at mollis pharetra, dui nisi dignissim diam, at vehicula odio purus ut nunc. Sed sed lobortis tortor. Nulla auctor velit lacus, ut aliquam massa imperdiet ut. Proin in magna nibh. Sed sed varius justo. Etiam eu porta nunc, eget porttitor ante. Praesent nec tempus lectus. Curabitur molestie, purus at mollis pharetra, dui nisi dignissim diam, at vehicula odio purus ut nunc. Sed sed lobortis tortor. Nulla auctor velit lacus, ut aliquam massa imperdiet ut. Proin in magna nibh. Sed sed varius justo. Etiam eu porta nunc, eget porttitor ante. Praesent nec tempus lectus. Curabitur molestie, purus at mollis pharetra, dui nisi dignissim diam, at vehicula odio purus ut nunc. Sed sed lobortis tortor. Nulla auctor velit lacus, ut aliquam massa imperdiet ut.
</p>
<p><span class="shape rounded-rectangle"></span>
Maecenas bibendum iaculis odio, non commodo purus molestie in. Sed sed metus eu purus molestie efficitur. Aliquam ac massa id quam sollicitudin euismod. Nulla eget nulla aliquet, congue orci sit amet, pellentesque est. Pellentesque habitant morbi tristique senectus et netus et malesuada fames ac turpis egestas. Phasellus bibendum augue erat, in congue nisl rhoncus consectetur. Praesent aliquam elit lacus, at dapibus nulla mollis sit amet. Donec ac ullamcorper purus. Nulla faucibus odio sodales lacinia gravida. Mauris fringilla tortor lacus, nec lacinia dui porttitor quis. Donec consectetur, odio in aliquam consectetur, urna velit scelerisque erat, sed viverra massa tellus nec leo. Aliquam mollis metus mauris. Phasellus orci tellus, pellentesque viverra libero posuere, elementum auctor leo. Proin a feugiat turpis. Nulla rhoncus ipsum augue, at iaculis odio convallis eu.
</p>
<p><span class="shape trapezoid"></span>
Proin in magna nibh. Sed sed varius justo. Etiam eu porta nunc, eget porttitor ante. Praesent nec tempus lectus. Curabitur molestie, purus at mollis pharetra, dui nisi dignissim diam, at vehicula odio purus ut nunc. Sed sed lobortis tortor. Nulla auctor velit lacus, ut aliquam massa imperdiet ut.Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin hendrerit elementum fringilla. Mauris laoreet risus enim, a tincidunt eros pulvinar ultrices. Maecenas sagittis nulla congue sem aliquet, a placerat est consequat. Morbi porttitor ante at tellus facilisis, eget commodo turpis porta. In non ipsum ex. Aenean in neque id lectus lacinia scelerisque sit amet id lectus. Ut gravida sem sit amet nunc suscipit, in scelerisque quam gravida.
</p>
  <img class="image" src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/1804713/image-shape.png">
<p>
Sed nec odio elit. Suspendisse pulvinar, nulla varius tempus feu giat, magna nulla feugiat neque, vel tempus nibh tellus nec metus. Vesti bulum et velit eu ligula tinc idunt vesti bulum. Aenean urna est, ullam corper ac tempus a, volu tpat et lacus. Vesti bulum at odio ac mi fin ibus laor eet. Curabitur maximus, orci at interdum fring illa, tortor magna auctor nunc, id auctor tortor nisl a est. Prae sent ultr icies accumsan magna. Al iquam posuere hendrerit felis, sed varius leo congue ac. Proin vulp utat electus at ullamcorper pulvinar, mi mi rhoncus lorem, a laoreet justo neque vel orci. Mauris in libero in urna vestibulum tincidunt id aliquam neque. Sed vitae sollicitudin est. Nullam fermentum neque lorem, in porttitor dolor rhoncus in. Praesent dapibus eros quis odio eleifend, et viverra neque mattis. Etiam vulputate velit vitae leo malesuada, a cursus orci feugiat. Praesent suscipit non urna at eleifend.
</p>
  <p><span class="shape gradient"></span>
Sed nec odio elit. Suspendisse pulvinar, nulla varius tempus feugiat, magna nulla feugiat neque, vel tempus nibh tellus nec metus. Vestibulum et velit eu ligula tincidunt vestibulum. Aenean urna est, ullamcorper ac tempus a, volutpat et lacus. Vestibulum at odio ac mi finibus laoreet. Curabitur maximus, orci at interdum fringilla, tortor magna auctor nunc, id auctor tortor nisl a est. Praesent ultricies accumsan magna. Aliquam posuere hendrerit felis, sed varius leo congue ac. Proin vulputate, lectus at ullamcorper pulvinar, mi mi rhoncus lorem, a laoreet justo neque vel orci. Mauris in libero in urna vestibulum tincidunt id aliquam neque. Sed vitae sollicitudin est. Nullam fermentum neque lorem, in porttitor dolor rhoncus in. Praesent dapibus eros quis odio eleifend, et viverra neque mattis. Etiam vulputate velit vitae leo malesuada, a cursus orci feugiat. Praesent suscipit non urna at eleifend.
</p>
</div>
!

CSS 

              
                
.shape {
  background-color: darkred;
  width: 200px;
  height: 200px;
  float: left;
}

.circle {
    shape-outside: circle( 100px at 50% 50%);
    border-radius: 50%;
}
.ellipse {
    shape-outside: ellipse( 100px 140px at 50% 50%);
    height: 300px;
    border-radius: 50%;
}
.rectangle {
    shape-outside: inset( 20px 30px 50px 0);
}
.rounded-rectangle {
    shape-outside: inset( 10px 10px 10px 10px round 50px);
  border-radius: 50px;
}
.trapezoid {
       shape-outside: polygon(37px 9px, 157px 7px, 189px 131px, 7px 127px);
    background: transparent;
}
@supports (clip-path: polygon(37px 9px, 157px 7px, 189px 131px, 7px 127px)) {
  .trapezoid {
  clip-path: polygon(37px 9px, 157px 7px, 189px 131px, 7px 127px);
  background-color: darkred;
  }
}
.image {
       shape-outside: url(https://s3-us-west-2.amazonaws.com/s.cdpn.io/1804713/image-shape.png);
  height: 400px;
  width: 400px;
    float: right;
}
.gradient{
  background: linear-gradient(37deg, rgba(0,212,255,1) 0%, rgba(2,0,36,0) 100%);
    shape-outside: linear-gradient(37deg, rgba(0,212,255,1) 0%, rgba(2,0,36,0) 100%);
       shape-image-threshold: 0.5;
}






* { box-sizing: border-box; }
body {
  background-color: black;
}
#wrapper {
  width: 100%;
  max-width: 1000px;
  font-size: 1.5em;
  margin: auto;
  line-height: 1.25;
  color:#FFF;
}
!

JS
!
999px

Console