<!DOCTYPE html>
<html>
<style>
.container {
    font: 20px/1 Ahem, sans-serif;
    width: 500px;
    height: 200px;
    border: 1px solid black;
}

.rounded-rect {
    width: 320px;
    height: 160px;
    background-color: blue;
    border-radius: 200px;
    -webkit-shape-outside: inset(0px round 200px);
}
</style>

<body>
<div class="container" style="text-align: right">
X&nbsp;<br/>
    <div style="float: right" class="rounded-rect"></div>
X&nbsp;<br/>
X&nbsp;<br/>
X&nbsp;<br/>
X&nbsp;<br/>
X&nbsp;<br/>
X&nbsp;<br/>
X&nbsp;<br/>
X&nbsp;<br/>
X&nbsp;
</div>

<p>Requires Ahem font. There is a 0px size inset applied on the right float with 200px radius.<br>
The black squares should trace the left side of the rounded rectangle's blue outline.</p>
<p>Bug <a href="http://webkit.org/b/129726">129726</a>: [CSS Shapes] inset does not properly clamp large corner radii</p>

</body>