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Test Info:

<!DOCTYPE html>
<html>
<body>
<table bgcolor="orange" border="1">
<tr>
<td>c11</td><td>c12</td><td>c13</td><td>c14</td>
</tr>
<tr>
<td id="c21">c21</td><td colspan="0">X1</td>
</tr>
</table>
<script>
document.body.offsetWidth;
c21 = document.getElementById("c21");
c21.remove();
</script>
</body>
</html>