按照书中所列步骤，home.html文件始终无法打开，直接用浏览器打开也不行？是咋回事呢？
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Frameset//EN" "http://www.w3.org/TR/html4/frameset.dtd">
<html>
<meta charset="UTF-8">
<head>
<title>AutoTestPlat-自动化平台测试开发</title>
</head>
<frameset id="frame1" rows="*" cols="285,*" framespacing="0" frameborder="yes" border="0">
<frame src="../left" name="leftFrame" scrolling="auto" noresize>
</frameset>
<noframes>
<body>
<ul class="nav navbar-nav navbar-right">
<li>欢迎您，<a href="../admin/">{{user}}</a></li>
<li><a href="/logout/" target="_top">退出</a></li>
</ul>
</body>
</noframes>
</html>