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<!DOCTYPE html>
<html>
<head>
<style> 
#example1 {
  border: 2px solid red;
  padding: 10px;
  border-top-right-radius: 25px;
}
#example2 {
  border: 2px solid red;
  padding: 10px;
  border-top-right-radius: 50px 20px;
}
</style>
</head>
<body>
<h2>border-top-right-radius: 25px:</h2>
<div id="example1">
  <p>The border-top-right-radius property defines the radius of the top-right corner.</p>
</div>
<h2>border-top-right-radius: 50px 20px:</h2>
<div id="example2">
  <p>If two values are set; the first one is for the top border, the second one for the right border.</p>
</div>
</body>
</html>