<!DOCTYPE html>
<html>
<head>
  <meta name="viewport" contents="width=device-width">
  <style>
    
    div {
      margin: 20px;
      box-sizing: border-box;
      display: block;
      width: 100px;
      min-height: 50px;
      border-right: 5px solid rgba(0, 0, 0, 0.15);
      border-radius: 10px;
      border-bottom-right-radius: 0px 0px;
      border-top-right-radius: 0px 0px;
    }
  </style>
</head>
<body>
  <!--This test passes if there is only a right border visible on the div below.-->
  <div>
  </div>
</body>
</html>