<html>
<head>
<style>
/* <!-- </style> --> */
h1 { background-color: red; }
/* This comment should not be part of the style. */
</style>
</head>
<body>
<h1>This text should not have a red background.</h1>
</body>
</html>
<html>
<head>
<style>
/* <!-- </style> --> */
h1 { background-color: red; }
/* This comment should not be part of the style. */
</style>
</head>
<body>
<h1>This text should not have a red background.</h1>
</body>
</html>