怎么给网页加滚动条?
<title>无标题文档</title>
<style>
body{overflow:auto;}
</style>
</head>
<frameset rows="200%,300%,*" style="overflow:auto">
<frame src="Untitled-1.html" name="topFrame" scrolling="no" marginheight="0" noresize="true" marginwidth="0" />
<frame src="Untitled-2.html" name="leftFrame" scrolling="auto" marginwidth="0" noresize="true" marginheight="0" />
<frame src="Untitled-3.html" name="footerFrame" scrolling="auto" marginwidth="0" noresize="true" marginheight="0" />
</frameset><noframes></noframes>
</html>
这是我的代码