title: CSS resize property both doesn't work properly with flex
body: <p>I am using the CSS resize property with flexbox, and it only works vertically and not horizontally. The second problem is the 
  vertical behavior let you resize just a little bit.</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>* {
   box-sizing: border-box;
  }
  
  .flex {
   display: flex;
   flex-wrap: wrap;
  }
  
  
  .box {
   flex: 1 1 50%;
   border: 1px solid red;
   overflow: auto;
   padding: 4em;
   resize: both;
  }</code></pre>
  <pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;section class="flex"&gt;
   &lt;div class="box"&gt;1&lt;/div&gt;
   &lt;div class="box"&gt;2&lt;/div&gt;
   &lt;div class="box"&gt;3&lt;/div&gt;
   &lt;div class="box"&gt;4&lt;/div&gt;
  &lt;/section&gt;</code></pre>
  </div>
  </div>
  </p>
  
  <p>What is the problem?</p>