Type the following in notepad and save as .html (change file type to "all files")
<html>
<head>
<title>BLOCKED</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<style type="text/css">
<!--
.style1 {
color: #FF0000;
font-weight: bold;
font-size: 120px;
}
body {
background-color: #999999;
}
-->
</style>
</head>
<body>
<div align="center" class="style1">BLOCKED</div>
</body>
</html>