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<!DOCTYPE html>
<meta charset="UTF-8">
<title>transform interpolation</title>
<link rel="help" href="https://drafts.csswg.org/css-transforms/#transform-property">
<meta name="assert" content="transform supports animation as a transform list">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/css/support/interpolation-testcommon.js"></script>
<style>
.parent {
transform: translate(30px);
}
.target {
color: white;
width: 100px;
height: 100px;
background-color: black;
display: inline-block;
overflow: hidden;
transform: translate(10px);
}
.expected {
background-color: green;
}
.parent {
transform: 30px;
}
.target > div {
width: 10px;
height: 10px;
display: inline-block;
background: orange;
margin: 1px;
}
.test {
overflow: hidden;
}
</style>
<body>
<template id="target-template">
<div></div>
</template>
</body>
<script>
test_interpolation({
property: 'transform',
from: neutralKeyframe,
to: 'translate(20px)',
}, [
{at: -1, expect: 'translate(0px)'},
{at: 0, expect: 'translate(10px)'},
{at: 0.25, expect: 'translate(12.5px)'},
{at: 0.75, expect: 'translate(17.5px)'},
{at: 1, expect: 'translate(20px)'},
{at: 2, expect: 'translate(30px)'},
]);
test_interpolation({
property: 'transform',
from: 'initial',
to: 'translate(20px)',
}, [
{at: -1, expect: 'translate(-20px)'},
{at: 0, expect: 'translate(0px)'},
{at: 0.25, expect: 'translate(5px)'},
{at: 0.75, expect: 'translate(15px)'},
{at: 1, expect: 'translate(20px)'},
{at: 2, expect: 'translate(40px)'},
]);
test_interpolation({
property: 'transform',
from: 'inherit',
to: 'translate(20px)',
}, [
{at: -1, expect: 'translate(40px)'},
{at: 0, expect: 'translate(30px)'},
{at: 0.25, expect: 'translate(27.5px)'},
{at: 0.75, expect: 'translate(22.5px)'},
{at: 1, expect: 'translate(20px)'},
{at: 2, expect: 'translate(10px)'},
]);
test_interpolation({
property: 'transform',
from: 'unset',
to: 'translate(20px)',
}, [
{at: -1, expect: 'translate(-20px)'},
{at: 0, expect: 'translate(0px)'},
{at: 0.25, expect: 'translate(5px)'},
{at: 0.75, expect: 'translate(15px)'},
{at: 1, expect: 'translate(20px)'},
{at: 2, expect: 'translate(40px)'},
]);
</script>
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