<html>
<head>
<style>
div
{
border:2px solid;
padding:10px;
background:#dddddd;
border-top-left-radius:2em;
-webkit-border-top-left-radius:2em; /* Safari */
}
</style>
</head>
<body>
<div>The border-top-left-radius property allows you to add a rounded border to the top-left corner.</div>
</body>
</html>