<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Invisible links</title>
</head>
<body>
<p>None of those invisible links should get a hint.</p>
<a href="/data/hello.txt" style="visibility: hidden">visibility: hidden</a>
<a href="/data/hello.txt" style="display: none">display: none</a>
<a href="/data/hello.txt" style="opacity: 0">opacity: 0</a>
</body>
</html>