Combine z-index settings and opacity in HTML and CSS

Description

The following code shows how to combine z-index settings and opacity.

Example


<html>
<head>
<style type='text/css'>
div {<!-- w  ww.jav  a  2 s  .co  m-->
  position: absolute;
  padding: 10px;
  border: 1px solid black;
  opacity: 0.9;
  background: lightyellow;
  width: 100px;
  height: 100px;
  top: 20px;
  left: 20px;
  z-index: 4;
}

div+div {
  background: lightblue;
  top: 40px;
  left: 40px;
  z-index: 3;
}

div+div+div {
  background: lightgreen;
  top: 60px;
  left: 60px;
  z-index: 2;
}

div+div+div+div {
  background: pink;
  top: 80px;
  left: 80px;
  z-index: 1;
}
</style>
</head>
<body>
  <div></div>
  <div></div>
  <div></div>
  <div></div>
</body>
</html>

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