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<!DOCTYPE html>
<meta charset="UTF-8">
<link rel="help" href="https://drafts.csswg.org/css-position-3/#propdef-left">
<meta name="test" content="left supports animation as a length or percentage">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/css/support/interpolation-testcommon.js"></script>
<style>
.parent {
position: relative;
left: 30px;
}
.target {
position: relative;
width: 10px;
height: 10px;
background-color: black;
left: 10px;
}
.expected {
background-color: green;
}
</style>
<body></body>
<script>
test_interpolation({
property: 'left',
from: neutralKeyframe,
to: '20px',
}, [
{at: -0.3, expect: '7px'},
{at: 0, expect: '10px'},
{at: 0.5, expect: '15px'},
{at: 1, expect: '20px'},
{at: 1.5, expect: '25px'},
]);
test_no_interpolation({
property: 'left',
from: 'initial',
to: '20px',
});
test_interpolation({
property: 'left',
from: 'inherit',
to: '20px',
}, [
{at: -0.3, expect: '33px'},
{at: 0, expect: '30px'},
{at: 0.5, expect: '25px'},
{at: 1, expect: '20px'},
{at: 1.5, expect: '15px'},
]);
test_no_interpolation({
property: 'left',
from: 'unset',
to: '20px',
});
test_interpolation({
property: 'left',
from: '-10px',
to: '10px'
}, [
{at: -0.3, expect: '-16px'},
{at: 0, expect: '-10px'},
{at: 0.5, expect: '0px'},
{at: 1, expect: '10px'},
{at: 1.5, expect: '20px'}
]);
</script>
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