1<html xmlns="http://www.w3.org/1999/xhtml" xmlns:svg="http://www.w3.org/2000/svg"><!-- no body element, intentionally --><div style="display: table-column-group;"/><svg:symbol id="s"/><script>
2
3document.documentElement.offsetHeight;
4document.getElementById("s").style.display = "table-column-group";
5
6</script></html>
7