<!DOCTYPE html>
<div style="columns:2; column-fill:auto; height:20px;">
    <div style="columns:2;">
        <div style="height:40px;"></div>
        <div style="columns:1; height:0; column-fill:auto;">
            <div></div>
        </div>
    </div>
</div>
<script src="../../resources/testharness.js"></script>
<script src="../../resources/testharnessreport.js"></script>
<script>
    test(() => { }, "No crash or assertion failure.");
</script>