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diff --git a/testing/web-platform/tests/css/css-position/position-absolute-dynamic-static-position-table-cell.html b/testing/web-platform/tests/css/css-position/position-absolute-dynamic-static-position-table-cell.html
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+++ b/testing/web-platform/tests/css/css-position/position-absolute-dynamic-static-position-table-cell.html
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+<!DOCTYPE html>
+<link rel="match" href="../reference/ref-filled-green-100px-square.xht">
+<link rel="help" href="https://www.w3.org/TR/css-position-3/" />
+<meta name="assert" content="This test checks that a dynamic change in constraints calculates the static position correctly for table-cells."/>
+<style>
+#table-cell {
+ position: relative;
+ display: table-cell;
+ vertical-align: middle;
+
+ width: 100px;
+ height: 100px;
+ background: red;
+}
+
+#target {
+ position: absolute;
+ translate: 0 -50px;
+
+ width: 100px;
+ height: 100px;
+ background: green;
+}
+</style>
+<p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
+<div id="table-cell">
+ <div id="target" style="top: 0;"></div>
+</div>
+<script>
+document.body.offsetTop;
+document.getElementById('target').style.top = 'auto';
+</script>