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<!DOCTYPE html>
<script src="../resources/testharness.js"></script>
<script src="../resources/testharnessreport.js"></script>
<div id='container'>
<div id='element'></div>
</div>
<script>
var element = document.getElementById('element');
var container = document.getElementById('container');
test(function() {
element.style.fontSize = '10px';
var player = element.animate([{perspective: '3em'}, {perspective: '5em'}], 10);
player.pause();
player.currentTime = 5;
element.style.fontSize = '20px';
assert_equals(getComputedStyle(element).perspective, '80px');
}, 'perspective responsive to style changes');
test(function() {
element.style.fontSize = '10px';
var player = element.animate([{perspective: '40px'}, {perspective: 'calc(40px - 2em)'}], 10);
player.pause();
player.currentTime = 5;
element.style.fontSize = '40px';
assert_equals(getComputedStyle(element).perspective, 'none');
player.currentTime = 7.5;
assert_equals(getComputedStyle(element).perspective, 'none');
}, 'perspective clamped to none');
</script>
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