Where do I go to change the position of the style.css?

Add the following code to themes functions.php file. Replace ‘http://cdn.something.com/something.css‘ to your stylesheet file uri on CDN.

add_filter('stylesheet_uri', 'my_custom_stylesheet_location');
function my_custom_stylesheet_location( $stylesheet_uri ){
    return 'http://cdn.something.com/something.css';
}