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<!DOCTYPE html>
<meta charset="utf-8">
<title>CSS Transitions Test: transition-property - z-index</title>
<link rel="author" title="Intel" href="http://www.intel.com">
<link rel="author" title="Shiyou Tan" href="mailto:shiyoux.tan@intel.com">
<link rel="help" href="https://drafts.csswg.org/web-animations-1/#animation-type">
<link rel="help" href="https://www.w3.org/TR/CSS22/visuren.html#z-index">
<meta name="flags" content="ahem">
<meta name="assert" content="Test checks that the 'z-index' property is animatable.">
<style>
div {
height: 100px;
width: 100px;
}
#ref {
background-color: red;
z-index: 1;
}
#test {
background-color: green;
position: relative;
top: -100px;
transition-duration: 2s;
transition-property: z-index;
transition-timing-function: linear;
z-index: -100;
}
</style>
<body>
<p>Click red square below. Test passes if the color of square changes to green after waiting a moment.</p>
<div id="ref"></div>
<div id="test"></div>
<script>
(function() {
var test = document.querySelector("#test");
document.addEventListener("click", function(evt) {
test.setAttribute("style", "z-index: 100;");
}, false);
})();
</script>
</body>
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