<!DOCTYPE html>
<html>
<head>
<style>
.clipround {
  width:250px;
  overflow:hidden;
  -moz-transform: translateX(300px);
	border-radius:35px;
  opacity:0.5;
}
</style>
</head>
<body>
<img src="mozilla-banner.gif" class="clipround">
</body>
</html>