JSFiddle - React, Tailwind, and code Playground

by bejnar

HTML

<div class="ancestor">
  Ancestor
  <div class="child">
    I should be at the top, <br>
    but my ancestor is lower
    than .popup
   </div>
</div>

<div class="popup">
  I should be lower
</div>

CSS

.ancestor {
  position: fixed;
  top: 0;
  left: 0;
  height: 200px;
  width: 200px;
  background-color: blue;
  z-index: 1;
}

.child {
  position: fixed;
  z-index: 3;
  
  top: 20px;
  left: 20px;
  height: 200px;
  width: 200px;
  background-color: orange;
}

.popup {
  position: fixed;
  z-index: 2;
  
  top: 40px;
  left: 40px;
  height: 200px;
  width: 200px;
  background-color: yellow;
}