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HTML

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CSS

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CSS Base

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JavaScript

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Babel includes JSX processing.

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HTML 

              
                
  <div class="wrapper">
    <div class="content">
      <p class="heading">Source Serif Pro <a href="https://codepen.io/mosne/pen/qOxoxa" target="_blank">advanced demo with grids</a></p>
      <h1>Grumpy wizards make toxic brew for the evil Queen and Jack.</h1>
      <p class="intro">One morning, when Gregor Samsa woke from troubled* dreams, he found himself transformed *in his bed into a horrible vermin. He lay on his armour-like back, and if he lifted his head a little he could see his brown belly, slightly domed and divided by arches into stiff sections. </p>
      <p class="pullquote">"The bedding was hardly able to cover it and seemed ready to slide off any moment. His many legs, pitifully thin compared with the size of the rest of him, waved about helplessly as he looked."</p>
      <p>One morning, when Gregor Samsa woke from troubled dreams, he found himself transformed in his bed into a horrible vermin. He lay on his armour-like back, and if he lifted his head a little he could see his brown belly, slightly domed and divided by arches into stiff sections.</p>
      <p>One morning, when Gregor Samsa woke from troubled dreams, he found himself transformed in his bed into a horrible vermin. He lay on his armour-like back, and if he lifted his head a little he could see his brown belly, slightly domed and divided by arches into stiff sections.</p>
      <p>One morning, when Gregor Samsa woke from troubled dreams, he found himself transformed in his bed into a horrible vermin. He lay on his armour-like back, and if he lifted his head a little he could see his brown belly, slightly domed and divided by arches into stiff sections.</p>
      <p>One morning, when Gregor Samsa woke from troubled dreams, he found himself transformed in his bed into a horrible vermin. He lay on his armour-like back, and if he lifted his head a little he could see his brown belly, slightly domed and divided by arches into stiff sections.</p>
      <p class="pullquote">"The bedding was hardly able to cover it and seemed ready to slide off any moment. His many legs, pitifully thin compared with the size of the rest of him, waved about helplessly as he looked."</p>
 <div class="content">
      <p class="heading">Source Serif Pro</p>
      <h1>Grumpy wizards make toxic brew for the evil Queen and Jack.</h1>
      <p class="intro">One morning, when Gregor Samsa woke from troubled* dreams, he found himself transformed *in his bed into a horrible vermin. He lay on his armour-like back, and if he lifted his head a little he could see his brown belly, slightly domed and divided by arches into stiff sections. </p>
      <p class="pullquote">"The bedding was hardly able to cover it and seemed ready to slide off any moment. His many legs, pitifully thin compared with the size of the rest of him, waved about helplessly as he looked."</p>
      <p>One morning, when Gregor Samsa woke from troubled dreams, he found himself transformed in his bed into a horrible vermin. He lay on his armour-like back, and if he lifted his head a little he could see his brown belly, slightly domed and divided by arches into stiff sections.</p>
      <p>One morning, when Gregor Samsa woke from troubled dreams, he found himself transformed in his bed into a horrible vermin. He lay on his armour-like back, and if he lifted his head a little he could see his brown belly, slightly domed and divided by arches into stiff sections.</p>
      <p>One morning, when Gregor Samsa woke from troubled dreams, he found himself transformed in his bed into a horrible vermin. He lay on his armour-like back, and if he lifted his head a little he could see his brown belly, slightly domed and divided by arches into stiff sections.</p>
      <p>One morning, when Gregor Samsa woke from troubled dreams, he found himself transformed in his bed into a horrible vermin. He lay on his armour-like back, and if he lifted his head a little he could see his brown belly, slightly domed and divided by arches into stiff sections.</p>
      <p class="pullquote">"The bedding was hardly able to cover it and seemed ready to slide off any moment. His many legs, pitifully thin compared with the size of the rest of him, waved about helplessly as he looked."</p>
 
    </div>
    </div>
  </div>
!

CSS 

              
                body {
  font-size: calc(.7vw + 14px);
  line-height: 1.5;
  font-family: 'Source Serif Pro', serif;
  font-style: normal;
  font-weight: 400;
}

* {
  box-sizing: border-box;
}

.content{
  font-size:100%;
}



.wrapper {
  margin: 0 auto;
  padding: 2em 1em;
  max-width: 45em;
}

h1 {
  font-size: calc(4em - 1rem);
  line-height: 1;
  margin-bottom: 2rem;
}

p {
  margin: 0;
  margin-bottom: 1em;
}

p.pullquote {
  font-size: 1.3em;
  margin-bottom: 1em;
  padding-left: 1.5em;
  border-width: 0px 0px 0px 3px;
  border-style: solid;
  font-weight: 700;
  margin-left: -1.5em;
}

.content .content{
  font-size:66%;
  width:66%;
  background:yellow;
  padding:1em;
}
!

JS
!
999px

Console