<!doctype html>
<style>
    div {
        font-size: 50px;
        text-decoration: underline;
    }
</style>
<script>
    onload = function() {
        target.style.textDecorationLine = "overline";
    };
</script>
<p>Test that changes in text-decoration-line are recalculated correctly. PASS
if the text below has a solid green overline, and no underline.</p>
<div id="target">
    Filler text
</div>