This...

<link rel="stylesheet" type="text/css" href="<?php echo $_SERVER["DOCUMENT_ROOT"].'/../includes/css/style.css'; ?>">

Outputs this...

C:/xampp/htdocs/MYSITE/../includes/css/style.css

NOT

C:/xampp/htdocs/MYSITE../includes/css/style.css

Currently i have...

<link rel="stylesheet" type="text/css" href="<?php echo $_SERVER["DOCUMENT_ROOT"].'/includes/css/style.css'; ?>">

Which outputs correctly this..

C:/xampp/htdocs/MYSITE/includes/css/style.css

But CSS still not applying.