<html>
<head>
<style>
body {
background-color: #E7E9EB;
}
#myDIV {
width: 100%;
height: 300px;
background-color: #FFFFFF;
border: 1px solid black;
text-align: right;
border-start-start-radius: 50px;
}
</style>
</head>
<body>
<h1>The border-start-start-radius Property</h1>
<div id="myDIV">
A demonstration of a rounded corner.
</div>
</body>
</html>