Custom CSS

// Register Style
function custom_styles() {

	wp_register_style( 'style-custom', 'style-custom.css', array( 'style.css' ), false );
	wp_enqueue_style( 'style-custom' );

}

// Hook into the 'wp_enqueue_scripts' action
add_action( 'wp_enqueue_scripts', 'custom_styles' );