<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0">
<style>
#top_link {
position: absolute;
top: 0;
width: 100%;
background-color: lightgreen;
text-align: center;
}
#bottom_link {
position: absolute;
top: 150vh;
width: 100%;
background-color: lightblue;
text-align: center;
}
</style>
</head>
<body>
<a id="top_link" href="../test.html">Top Link</a>
<a id="bottom_link" href="../test.html">Bottom Link</a>
</body>
</html>