我有一个包含两页的网站，index.html并且page2.html：
index.html：
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Homepage</title>
<style type="text/css">
#holder {margin: 20px auto; max-width: 900px;}
</style>
</head>
<body>
<div id="holder">
<h1>Home</h1>
<ul id="menu">
<li><a href="/page2.html">Internal Link</a></li>
<li><a href="https://www.apple.com/" target="_blank">App Store</a>
</li>
</ul>
<h2 id="useApp">Is the user using our app?</h2>
</div>
</body>
</html>
page2.html：
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Page 2</title>
<style type="text/css">
#holder {margin: 20px auto; max-width: 900px;}
</style>
</head>
<body>
<div id="holder">
<h1>Internal Page</h1>
<ul id="menu">
<li><a href="/index.html">Homepage</a></li>
<li><a href="https://www.apple.com/" target="_blank">App Store</a> …