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<!DOCTYPE html>
<html>
<head>
<style> 
/* layer 1 */
@layer {
  body {
    background: pink;
  }
}
/* layer 2 */
@layer {
  body {
    background: lightblue; /* last layer wins */
  }
}
</style>
</head>
<body>
<h1>The @layer Rule</h1>
</body>
</html>