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<!DOCTYPE html>
<html>
<head>
<style> 
.box {
  border: 2px solid green;
  background-color: beige;
  font-family: monospace;
  font-size: 20px;
  & > a {
    color: green;
    &:hover {
      color: white;
      background-color: salmon;
    }
  }
}
</style>
</head>
<body>
<h1>Demo of the nesting (&) Selector</h1>
<div class="box">
This text contains a <a href="#">link</a>. Hover over the link to see the effect.
</div>
</body>
</html>