title: Why does an element with { flex: 1; width: 0; } still have width?
body: <p>Facebook uses this CSS: </p>
  
  <pre><code>{flex: 1;  width: 0;}
  </code></pre>
  
  <p>but the div still has width.</p>
  
  <p><img src="https://i.stack.imgur.com/JimaL.png" alt="Image here"> </p>