title: Absolute position element cannot overflow other flex items
body: <p>Who can I set the black box to be on top of the second box?
  As you can see every brown box is 100px and the black box is 150px.
  So I need the black box to fill the second half brown box too.
  But I cannot figure out any way to achieve that.</p>
  <p><a href="https://i.stack.imgur.com/zjtXX.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/zjtXX.png" alt="I have some problem with the black box. Black box m" /></a></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>.container {
    display: flex;
  }
  
  .contents {
    width: 100px;
    height: 100px;
    background-color: antiquewhite;
    border: dotted 1px #c7c7c7;
    position: relative;
  }
  
  .overflowing-div {
    position: absolute;
    width: 150px;
    height: 50px;
    background-color: black;
  }</code></pre>
  <pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;div class="container"&gt;
  
    &lt;div class="contents"&gt;
      &lt;div class="overflowing-div"&gt;&lt;/div&gt;
    &lt;/div&gt;
  
    &lt;div class="contents"&gt;&lt;/div&gt;
    &lt;div class="contents"&gt;&lt;/div&gt;
    &lt;div class="contents"&gt;&lt;/div&gt;
  &lt;/div&gt;</code></pre>
  </div>
  </div>
  </p>