Blitz - WPT: z-index-020.html

wpt / css / CSS2 / zindex / z-index-020.html

<!DOCTYPE html>
<html class="reftest-wait">
<title>CSS Test: z-index - dynamic changes</title>
<link rel="author" title="Oriol Brufau" href="obrufau@igalia.com">
<link rel="help" href="http://www.w3.org/TR/CSS21/visuren.html#z-index" />
<link rel="match" href="../../reference/ref-filled-green-200px-square.html">
<meta name="assert" content="Checks that z-index can be changed dynamically.">
<style>
div {
  width: 200px;
  height: 200px;
  position: absolute;
}
#red {
  background: red;
}
#target {
  background: green;
  z-index: -1;
}
#target.front {
  z-index: 1;
}
</style>

<p>Test passes if there is a filled green square and <strong>no red</strong>.</p>

<div id="red"></div>
<div id="target"></div>

<script src="/common/reftest-wait.js"></script>
<script src="/common/rendering-utils.js"></script>
<script>
waitForAtLeastOneFrame().then(() => {
  document.getElementById("target").className = "front";
  takeScreenshot();
});
</script>
</html>

/css/reference/ref-filled-green-200px-square.html

<!DOCTYPE html>
<meta charset="utf-8">
<title>CSS Reftest Reference</title>
<link rel="author" title="Javier Fernandez Garcia-Boente" href="jfernandez@igalia.com" />
<style>
div {
  background-color: green;
  height: 200px;
  width: 200px;
}
</style>
<p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
<div></div>