<!DOCTYPE html>
<html lang="en">
	<head>
		<meta charset="utf-8">
		<title>Sporz</title>
        <link href="/bootstrap/css/bootstrap.min.css" rel="stylesheet">
	</head>
	<body>
	<?php $this->yields(); ?>
	</body>
</html>

<!DOCTYPE html>
<html lang="en">
	<head>
		<meta charset="utf-8">
		<title>Sporz</title>
        <link href="bootstrap/css/bootstrap.min.css" rel="stylesheet">
	</head>
	<body>
	<?php $this->yields(); ?>
	</body>
</html>

--- 
+++ 
@@ -3,7 +3,7 @@
 	<head>
 		<meta charset="utf-8">
 		<title>Sporz</title>
-        <link href="bootstrap/css/bootstrap.min.css" rel="stylesheet">
+        <link href="/bootstrap/css/bootstrap.min.css" rel="stylesheet">
 	</head>
 	<body>
 	<?php $this->yields(); ?>
Use absolute include web path
