<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=BIG5">
<style type="text/css">
#blockElements.backGround {
background-color:#b0c4de;
width:100px;
}
.innerElement {
font-style:italic;
color : green;
}
</style>
</head>
<body>
<div id = "blockElements" class = "backGround">
<p>Hello <span class = "innerElement">world . </span></p>
<p>Hello div.</p>
</div>
</body>
</html>