title: Why doesn't justify-content: stretch work?
body: <p>Why does the code below not stretch my 100px items?</p>
  
  <p>The results are basically close to this:</p>
  
  <pre><code>[100px|100px|100px|.........]
  </code></pre>
  
  <p>That looks a lot like flex-start, not flex-stretch. Is this the intended behavior?</p>
  
  <p>I'm looking for:</p>
  
  <pre><code>[...100px...100px...100px...]
  </code></pre>
  
  <p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
  <div class="snippet-code">
  <pre class="snippet-code-css lang-css prettyprint-override"><code>.box {
    display: flex;
    justify-content: stretch;
    width: 500px;
  }
  
  .item {
    width: 100px;
  }</code></pre>
  <pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;div class="box"&gt;
    &lt;div class="item"&gt;1&lt;/div&gt;
    &lt;div class="item"&gt;2&lt;/div&gt;
    &lt;div class="item"&gt;3&lt;/div&gt;
  &lt;/div&gt;</code></pre>
  </div>
  </div>
  </p>