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Test Info:
<!DOCTYPE html>
<html>
<head>
<script>
function boom()
{
var s = document.getElementById("s");
var t = document.getElementById("t");
s.remove();
t.style.display = "none";
}
</script>
<style id="s">
.float { float: right; height: 1em; }
</style>
<style>
#t { border: 1px solid green; }
</style>
</head>
<body onload="boom();">
<div style="column-count: 2;"><div id="t" class="float"></div></div>
</body>
</html>