<!DOCTYPE html>
<head>
<title>This tests that fast and slow run width functions produce the same results.</title>
<style>
html {
    font-family: "Helvetica Neue";
    font-size: 62%;
}

div {
    font-weight: 400;
    font-size: 2.5rem;
    display: inline-block;
}
</style>
</head>
<body>
The text below should not wrap.<br>
<div>alignment-baseline</div>
</body>
</html>