<!DOCTYPE html>
<html>
<head>
<meta charset=” utf-8” >
<title>HTML垂直框架</title>
</head>
<!-- 注意：frameset不要和body放在同一个html文件内 -->
<frameset cols="25%,50%,25%">
<frame src="frame_a.html" scrolling="no">
<frameset rows="25%,50%,25%">
<frame src="frame_a.html" scrolling="no">
<frame src="frame_b.html" scrolling="no">
<frame src="frame_c.html" scrolling="no">
</frameset>
<frame src="frame_c.html" scrolling="no">
</frameset>
</html>
