div怎么没效果？
各位大哥，这是肿么了？DIV背景没效果
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
<style type="text/css">
div#abcd {width:960px; background:#33C}
</style>
</head>
<body>
<div id=“abcd”>dfsdfsdfsdfsdf</div>
</body>
</html>
