<!doctype html>
<html>
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no" />
<title>HTML5 — Structures</title>
<style>
<?php
$color = "#bada55";
echo "h1{color:".$color."}"
?>
</style>
</head>
<body>
<h1>
<?php
echo "Hallo";
?>
</h1>
</body>
</html>