title: In CSS flexbox, gap is not working with flex wrap
body: <p>Yes, this has been asked before, and I have seen it work numerous times in online examples, but I must be missing something in my attempt:</p>
  <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>main.wrap {
    display: flex;
    flex-wrap: wrap;
    /*flex-direction: row; the default */
    gap: 10%;
  }</code></pre>
  <pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;main class="wrap"&gt;
    &lt;div class="column"&gt;
      &lt;h3&gt;Wrap with gap&lt;/h3&gt;
      &lt;p&gt;Lorem ipsum dolor sit amet, consectetur adipiscing elit. Praesent tincidunt imperdiet justo, ac rhoncus urna sollicitudin vitae. Duis eu dolor eu dui tempor cursus. &lt;/p&gt;
    &lt;/div&gt;
  
    &lt;div class="sidebar"&gt;
      &lt;h3&gt;Sidebar&lt;/h3&gt;
      &lt;p&gt;Nullam posuere commodo quam eget ultricies. Duis luctus, mauris at iaculis tempor. &lt;/p&gt;
    &lt;/div&gt;
  &lt;/main&gt;</code></pre>
  </div>
  </div>
  </p>
  <p>Works fine with the default of <code>no-wrap</code></p>
  <p>See it here: <a href="https://codepen.io/breadwild/pen/abWMQPB" rel="nofollow noreferrer">https://codepen.io/breadwild/pen/abWMQPB</a></p>
  <p>Thoughts?</p>