title: Which CSS properties create a stacking context?
body: <p>I'm studying about <a href="https://developer.mozilla.org/en-US/docs/CSS/Understanding_z-index/The_stacking_context">stacking contexts</a> and doing some tests with the properties that create a stacking context.</p>
  
  <p>I did several tests and found that, in addition to <code>z-index</code>, of course, the following properties also create a stacking context:</p>
  
  <ul>
  <li><code>transform</code> other than <code>none</code>;</li>
  <li><code>opacity</code> other than <code>1</code>;</li>
  <li>And <code>perspective</code>.</li>
  </ul>
  
  <p>Are there other properties that apply a stacking context?</p>