This is my Index page.

<div id="main-content">
	<?php
		if(isset($_GET["page"]) && $_GET["page"] != "home"){
			if(file_exists($_GET["page"].".php")){
				include($_GET["page"].".php");
			}else{
				include("PageNotFound.php");
				}
		}else{
			include("home.php");
		}
	?>
		
	</div>

This is my navigation page

<?php echo"
<ul>
	<li><a href='/'>Home</a></li>
	<li><a href='?page=about'>About</a></li>
	<li><a href='?page=portfolio'>Portfolio</a></li>
	<li><a href='#'>Contact</a></li>
</ul>
";
?>

i dont know how i would make the :active property look.

here's the site right now.

http://attilahajzer.host-ed.net/