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Test Info:

<!DOCTYPE html>
<meta charset="utf-8">
<title>CSS Box Alignment Test: gap test animation</title>
<link rel="author" title="Manuel Rego Casasnovas" href="mailto:rego@igalia.com">
<meta name="assert" content="This test checks that gap property is interpolable for each longhand (row-gap and column-gap) independently.">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<style>
@keyframes gap-100-200-to-200-400 {
from { gap: 100px 200px; }
to { gap: 200px 400px; }
}
#target {
animation-name: gap-100-200-to-200-400;
animation-timing-function: linear;
animation-duration: 2s;
animation-delay: -1s;
animation-play-state: paused;
}
</style>
<body>
<div id="target"></div>
<div id="log"></div>
<script>
test(
function(){
var target = document.getElementById("target");
assert_equals(getComputedStyle(target).gap, "150px 300px");
assert_equals(getComputedStyle(target).rowGap, "150px");
assert_equals(getComputedStyle(target).columnGap, "300px");
}, "gap is interpolable");
</script>
</body>