I have a website that has menu on every page. But, When I try to add new link on the menu, I had to add the link on every page individually. So, I used HTML and CSS like this so I just have to edit one thing, but it will just show up as "Home" with "a" tag on it instead of showing "Home" as hyperlink.
<!DOCTYPE html>
<html>
<head>
<style>
.menu:after{
content: "<a href="/index.html">Home</a><a href="/game">Games</a>";}
</style>
<title>Page</title>
</head>
<body bgcolor="#cccccc">
<center>
<div class="menu"></div>
<center>
</body>
</html>