Forum Moderators: phranque
<html>
<head>
<title></title>
<style type="text/css">
.container {background-color:green; -moz-opacity: 0.35; filter: alpha(opacity=35); height:200px;}
h1 {color:red; -moz-opacity:0.4; filter: alpha(opacity=40);}
</style>
</head>
<body>
<div class="container">
<h1>
testing
</h1>
</div>
</body>
</html>
The 'filter' takes care of IE windows, the -moz-opacity handles Mozilla.
This seems to work fairly well, for better info search google: opacity css