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<!DOCTYPE html>
<meta charset="utf-8">
<title>CSS Transitions Test: transition-property - opacity</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://drafts.csswg.org/css-color-3/#transparency">
<meta name="assert" content="Test checks that the 'opacity' property is animatable.">
<style>
#test {
background-color: red;
height: 100px;
opacity: 1;
transition-duration: 2s;
transition-property: opacity;
transition-timing-function: linear;
width: 100px;
}
</style>
<body>
<p>Click the red square below. Test passes if the red square blurs gradually not immediately until it disappears.</p>
<div id="test"></div>
<script>
(function() {
var test = document.querySelector("#test");
test.addEventListener("click", function(evt) {
test.setAttribute("style", "opacity: 0;");
}, false);
})();
</script>
</body>
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