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HTML

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CSS

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JavaScript

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Babel includes JSX processing.

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HTML 

              
                <article>
  <h1>CSS Grid Layout</h1>

  <h2>Introducing the <code>fr</code> unit</h2>

  <p>The <code>fr</code> unit stands for "fraction". It is not a length like <code>px</code> or <code>%</code> but is instead considered a "flex" unit. The free space in a container is distributed amongst the <code>fr</code> values.</p>
  
  <hr>

  <section>
    <pre><code>grid-template-columns: 1fr 1fr 1fr 1fr;</code></pre>
    
    <div class="grid one">
      <div class="column"></div>
      <div class="column"></div>
      <div class="column"></div>
      <div class="column"></div>
    </div>
    
    <p>This 800px wide container has four flex units total. Each one gets calculated as:<br><br><strong>flex * total free space / total number of flex units</strong><br>or<br><strong>1fr * 800px / 4 total fr's = 200px per column</strong></p>
    <p>Sounds complicated, but you don't need to think about how values are calculated while you're working with it. Check it out...</p>
  </section>
  
  <hr>

  <section>
    <pre><code>grid-template-columns: 2fr 2fr 3fr 3fr;</code></pre>
    
    <div class="grid two">
      <div class="column"></div>
      <div class="column"></div>
      <div class="column"></div>
      <div class="column"></div>
    </div>
  </section>
  
  <hr>

  <section>
    <pre><code>grid-template-columns: 8fr 2fr 1fr 1fr;</code></pre>
    <div class="grid three">
      <div class="column"></div>
      <div class="column"></div>
      <div class="column"></div>
      <div class="column"></div>
    </div>
    
    <p>Pretty simple so far! Just supply a value for each of your columns. But wait!</p>
  </section>
  
  <hr>

  <section>
    <pre><code>grid-template-columns: 4fr 2fr;</code></pre>
    
    <div class="grid four">
      <div class="column"></div>
      <div class="column"></div>
      <div class="column"></div>
      <div class="column"></div>
    </div>
    
    <p>Things get interesting when you provide a different number of values than the total number of elements. You can imagine the values "repeating" for each of the unspecified columns.</p>
  </section>
  
  <hr>

  <section>
    <pre><code>grid-template-columns: 1fr;</code></pre>
    
    <div class="grid five">
      <div class="column"></div>
      <div class="column"></div>
      <div class="column"></div>
      <div class="column"></div>
    </div>
    
    <p>You can provide only one value if you want.</p>
  </section>

  <hr>
  
  <section>
    <pre><code>grid-template-columns: 400px 1fr 1fr 1fr;</code></pre>
    
    <div class="grid six">
      <div class="column"></div>
      <div class="column"></div>
      <div class="column"></div>
      <div class="column"></div>
    </div>
    
    <p>You can mix units!</p>
  </section>
  
  <hr>

  <section>
    <pre><code>grid-template-columns: 400px 30% 1fr 1fr;</code></pre>
    
    <div class="grid seven">
      <div class="column"></div>
      <div class="column"></div>
      <div class="column"></div>
      <div class="column"></div>
    </div>
    
    <p>Whoooa, you can <em>really</em> mix units! 😮 This is crazy useful for making layouts quickly.</p>
  </section>
</article>
!

CSS 

              
                :root {
  background-color: #263238;
  color: #ccc;
  font-family: helvetica, sans-serif;
  font-size: 17px;
  text-align: center;
}

article {
  max-width: 800px;
  margin: 0 auto;
  
  hr {
    border: 1px solid #383c46;
    margin: 30px 0;
  }
  section {
    margin: 60px 0;
  }
}

h1, h2, h3, h4, h5, h6, p {
  font-weight: 300;
  letter-spacing: .5px;
}
h1 {
  margin-top: 50px;
  text-transform: uppercase;
  font-weight: 500;
}
p {
  margin: 30px 0;
}

code {
  background: #354c5a;
  border-radius: 2px;
  padding: 0px 4px;
  font-family: monaco, monospace;
}

pre {
  margin-top: 30px;
  margin-bottom: 30px;
  
  code {
    background: transparent;
    border-radius: initial;
    padding: initial;
  }
}

.grid {
  display: grid;
  width: 100%;
  margin: 30px auto;
  background-color: #ff6d6d;
  border-radius: 3px;

  .column {
    background-color: deepskyblue;
    min-height: 200px;
    margin: 3px;
    border-radius: 3px;
  }
}

.grid.one {
  grid-template-columns: 1fr 1fr 1fr 1fr;
}
.grid.two {
  grid-template-columns: 2fr 2fr 3fr 3fr;
}
.grid.three {
  grid-template-columns: 8fr 2fr 1fr 1fr;
}
.grid.four {
  grid-template-columns: 4fr 2fr;
}
.grid.five {
  grid-template-columns: 1fr;
}
.grid.six {
  grid-template-columns: 400px 1fr 1fr 1fr;
}
.grid.seven {
  grid-template-columns: 400px 30% 1fr 1fr;
}
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JS
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