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<!DOCTYPE html>
<html>
<head>
<style>
h1 {
  border-right-style: groove;
  border-right-color: coral;
  border-right-width: 7px;
}
div {
  border-style: solid;
  border-right-style: groove;
  border-right-color: coral;
  border-right-width: 7px;
}
</style>
</head>
<body>
<h1>A heading with a groove right border</h1>
<div>A div element with a groove right border.</div>
</body>
</html>