title: position: fixed child image - overflow: hidden not work
body: <p>I need to make an image invisible outside parent div (image are bigger than parent div), without changing <code>position: fixed</code>. Why <code>overflow: hidden</code> not working?</p>
  
  <p>Thank for any advice!</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>.wrap {
    height: 100;
    width: 100;
    background-color: #8087af;
    position: fixed;
    z-index: 1031;
    top: 0;
    overflow: hidden;
  }
  .image {
    position: fixed;
    left: 50;
    top: 50;
    z-index: 1032;
  }</code></pre>
  <pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;div class="wrap"&gt;
    &lt;img src="https://cs5-1.4pda.to/8787400.jpg" alt="" class="image"&gt;
  &lt;/div&gt;</code></pre>
  </div>
  </div>
  </p>