<!DOCTYPE HTML>
<html lang="en">
<head>
    <title>Bug 413982</title>
    <style type="text/css">
        div.clearboth {
            clear: both;
        }
        div.floatdiv {
            float: left;
        }
        span.innerspan {
            white-space: nowrap;
        }
    </style>
</head>
<body>
    <div class="floatdiv">
        This is
        <span class="innerspan"> the first line.
        </span>
    </div>
    <div class="clearboth">This is the second line.</div>
</body>
</html>