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<!DOCTYPE html>
<meta charset="utf-8">
<title>CSS Transitions Test: transition-property - background-position</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-backgrounds-3/#background-position">
<meta name="assert" content="Test checks that the 'background-position' property is animatable.">
<style>
#test {
border: 1px solid;
background-image: url("support/cat.png");
background-position: left;
background-repeat: no-repeat;
height: 200px;
transition-duration: 8s;
transition-property: background-position;
transition-timing-function: linear;
}
</style>
<body>
<p>Click the image inside of box below. Test passes if the image moves gradually but not immediately from left to right until it stops.</p>
<div id="test"></div>
<script>
(function() {
var div = document.querySelector("#test");
div.addEventListener("click", function(evt) {
div.setAttribute("style", "background-position: right;");
}, false);
})();
</script>
</body>
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