3 x 3 cell with large center layout with flexbox simple implementation ideas needed : <p>With CSS Grid, it's pretty easy to implement something like this <a href="https://codepen.io/anon/pen/VOLPRV" rel="nofollow noreferrer">3 x 3 cell with large center with css grid</a></p>

<pre><code>.container {
  display: grid;
  grid-template-columns: 60px 1fr 60px;
  grid-template-rows: 60px 1fr 60px;
}
</code></pre>

<p>Is there a simple way to implement this using flexbox?</p>

<p><a href="https://codepen.io/anon/pen/WBvRWr" rel="nofollow noreferrer">simple flexbox implementation?</a></p>
