title: How to fill the height of the viewport with tailwind css
body: <p>I'm just trying out Tailwind CSS and want to know how to fill the height of the viewport.</p>
  
  <p>Taking this example HTML from the docs</p>
  
  <pre><code>&lt;div class="flex items-stretch bg-grey-lighter"&gt;
      &lt;div class="flex-1 text-grey-darker text-center bg-grey-light px-4 py-2 m-2"&gt;1&lt;/div&gt;
      &lt;div class="flex-1 text-grey-darker text-center bg-grey-light px-4 py-2 m-2"&gt;2&lt;/div&gt;
      &lt;div class="flex-1 text-grey-darker text-center bg-grey-light px-4 py-2 m-2"&gt;3&lt;/div&gt;
  &lt;/div&gt;
  </code></pre>
  
  <p>How do I make it stretch to the bottom of the screen?</p>