<html>
<head>
<style>
div
{
border:2px solid #a1a1a1;
padding:10px 40px;
background:#dddddd;
width:300px;
border-radius:25px;
}
</style>
</head>
<body>
<div>The border-radius property allows you to add rounded corners to elements.</div>
</body>
</html>